Fits 1990-1993 Acura Integra GS, LS, and RS models (B18A1).

Ensure your engine build or bottom-end refresh has the reliable foundation it needs with this ACL standard size rod bearing set. These bearings are engineered to provide precise clearances and consistent oil film retention, serving as a direct replacement for worn factory components in B18A1 engines. Whether you are performing a stock rebuild or routine maintenance, ACL bearings provide the durability required for stable oil pressure and reduced friction.

• Manufacturer Part Number: 4B1946A-STD
• Bearing Size: Standard (STD)
• Engine Displacement: 1829cc / 1955cc / 1958cc
• Compatible Engine: Honda/Acura B18A1
• Included: Complete set of connecting rod bearings

The 4B1946A-STD set is manufactured to meet or exceed original equipment tolerances, providing the critical interface between the connecting rod and the crankshaft journal to prevent premature engine wear and ensure long-term mechanical health.

Fits select 1988-2009 Acura CL, Honda Accord, Odyssey, Prelude, S2000, and Isuzu Oasis models (1958-2056cc engines).

Engineered for high-RPM competition and performance rebuilds, the ACL Race Series rod bearing set provides the durability and precision required to protect your rotating assembly under heavy loads. These standard-size bearings feature a specialized tri-metal design that offers superior load-carrying capacity and fatigue resistance compared to traditional OE bearings.

The ACL Race Series is designed with a hardened steel backing for better bearing crush and seating, ensuring the bearings stay securely in place within the connecting rods even during extreme thermal expansion. To maximize heat transfer and seating accuracy, these bearings are manufactured without flash plating. Large chamfers are also integrated to clear oversized crankshaft fillets common in performance applications.

• Manufacturer Part Number: 4B1936H-STD
• Size: Standard (STD)
• Configuration: 4-cylinder set
• Engine Displacement Coverage: 1958cc to 2056cc
• Construction: Tri-metal hardened steel back with copper-lead intermediate layer
• Design Features: Increased crush for improved bearing retention and heat dissipation

Fits select 1996-1997 Isuzu Oasis LS and S models.

The ACL 4B1936A-STD Standard Size Rod Bearing Set is engineered to provide the precise clearances required for a reliable engine rebuild. Designed as a high-quality replacement for worn factory bearings, this set ensures consistent oil film thickness and reduces friction within the rotating assembly. These bearings are manufactured to tight tolerances to accommodate the specific demands of the 1958-2056CC H22A1 engine architecture found in the Oasis.

• Manufacturer Part Number: 4B1936A-STD
• Bearing Size: Standard (STD)
• Engine Displacement: 1958-2056CC
• Engine Code: H22A1
• Application: Connecting rod bearing set
• High-strength construction for enhanced durability under load

Fits 1994-2001 Acura Integra GS-R and Type R models equipped with B18C1 or B18C5 VTEC engines.

Engineered for high-RPM performance and competition use, this ACL High Performance rod bearing set is designed with the "HX" grind to provide extra oil clearance. This additional clearance promotes a thicker hydrodynamic oil film and superior cooling, protecting critical rotating components under the thermal and mechanical stresses of a modified B-series VTEC build. The tri-metal construction provides the fatigue strength and embeddability required for high-output 1.8L Honda/Acura powerplants.

• Manufacturer Part Number: 4B1925HX-STD
• Size: Standard Bore/Journal
• Clearance: Extra Oil Clearance (HX)
• Construction: Tri-metal lead-tin-copper hardened design
• Compatibility: Acura B18C1 and B18C5 VTEC engines

Fits 1994-2001 Acura Integra GS-R and Type R (B18C1 / B18C5).

Engineered for high-revving VTEC applications, the ACL High Performance Rod Bearing Set provides the precision and durability required for both spirited street driving and competitive track use. These bearings are designed to withstand the increased loads and thermal stresses of the B18C1 and B18C5 engines, replacing worn factory components with a high-strength alternative that maintains consistent oil film thickness across the RPM range.

• Manufacturer Part Number: 4B1925H-STD
• Bearing Size: Standard (STD)
• Engine Compatibility: Acura B18C1 and B18C5 VTEC
• Quantity: Complete set for one engine
• Construction: Multi-layer high-performance material

Fits 1994-2001 Acura Integra GS-R and Type R models equipped with B18C1 and B18C5 VTEC engines.

This ACL High Performance rod bearing set is engineered for high-revving Honda/Acura B-Series engines. These 0.25mm (.010") oversized bearings are specifically designed for applications where the crankshaft journals have been reground to restore surface integrity. Built to withstand the increased loads of performance driving and VTEC engagement, these bearings provide the durability required for both street and track builds.

• Engine Compatibility: Acura B18C1 and B18C5 VTEC
• Size: 0.25mm (.010") Oversize (for ground crankshafts)
• Construction: High-strength tri-metal design for superior load capacity
• Performance: Designed for high-RPM reliability and consistent oil clearance
• Manufacturer Part Number: 4B1925H-.25

Fits 1994-2001 Acura Integra GS-R and Type R models equipped with B18C1 or B18C5 VTEC engines.

This ACL High Performance rod bearing set is engineered for high-RPM racing applications and performance street builds. These bearings feature a .025mm oversize (undersize ID), designed specifically for crankshafts that have been precision ground or for builders looking to achieve exacting oil clearances. Built with ACL's proven tri-metal design, these bearings offer the fatigue strength and load-bearing capacity required for forced induction or high-compression naturally aspirated B-series engines.

• Material: High-strength tri-metal lead-tin-copper bonding
• Fitment: B18C1 and B18C5 VTEC engines
• Sizing: .025mm (.001") oversized (undersize bore)
• Features: Hardened steel backing for improved shell retention and heat dissipation
• Manufacturer Part Number: 4B1925H-.025

Fits 1994-2001 Acura Integra GS-R models equipped with the B18C VTEC engine.

This ACL standard size rod bearing set is engineered to provide precise clearances and reliable performance for your engine's bottom end. Whether you are performing a routine refresh or a complete rebuild, these bearings offer the durability needed for high-revving VTEC applications by maintaining consistent oil film thickness and reducing friction.

• Manufacturer Part Number: 4B1925A-STD
• Size: Standard (STD)
• Engine Compatibility: Acura B18C VTEC
• Includes full set of rod bearings for one engine
• Direct replacement for OE bearing tolerances

Fits 1997-2001 Honda Prelude and 2000-2009 Honda S2000.

This ACL High Performance connecting rod bearing set is engineered for high-RPM racing and performance applications where precise oil film thickness is critical. This "HX" series bearing is manufactured specifically with an additional 0.025mm (0.001") of oil clearance compared to a standard bearing, allowing for increased oil flow and cooling without requiring additional machining of the crankshaft journals.

• Manufacturer Part Number: 4B1912HX-STD
• Size: Standard Size (STD)
• Oil Clearance: Extra 0.025mm (0.001")
• Quantity: Complete set for one engine
• Application: Direct replacement for OE rod bearings in high-load environments

Engineered for high-performance and demanding applications, the ACL Race Series Rod Bearing Set provides superior durability and consistent oil film control for your Honda H22A4 engine. Connecting rod bearings are critical components that support the crankshaft's rotation and manage the high loads from combustion, making their integrity essential for engine longevity and performance.

These standard size rod bearings are precision-manufactured to strict tolerances, offering a robust upgrade over OEM units for both street performance and track use. The Race Series design focuses on enhanced load-carrying capacity and optimized oil clearance, crucial for maintaining proper oil pressure and preventing premature wear under increased stress and heat.

• Specifically engineered for the Honda H22A4 2.2L (2156cc) engine
• Standard size for direct replacement in unworn or standard-machined crankshafts
• Optimized for high-performance and race applications
• Manufacturer Part Number: 4B1912HD-STD

Fits 1997-2001 Honda Prelude (Base, Type SH) and 2000-2009 Honda S2000 (Base, CR) equipped with H22A4, F20C, or F22C engines.

Engineered for high-RPM applications and performance builds, this ACL Race Series connecting rod bearing set provides the durability required for Honda's high-output H and F-series engines. Featuring a specialized tri-metal construction, these bearings are designed to withstand increased cylinder pressures and higher inertial loads than standard OE replacements, making them essential for track-driven or forced-induction setups.

• Standard Size (STD) for factory-spec crankshaft journals
• Tri-metal composition for superior fatigue strength and load capacity
• Hardened steel backing to maintain bearing crush and seating under high heat
• Optimized oil clearance to support consistent lubrication at high engine speeds
• Manufacturer Part Number: 4B1912H-STD

Each set includes a full complement of rod bearings for one engine. Professional measurement of crankshaft journals and rod big-end bores is recommended to ensure correct oil clearances during assembly.

Fits select 1997-2001 Honda Prelude and 2000-2009 Honda S2000 (F20C / F22C / H22A4).

This ACL high-performance connecting rod bearing set is engineered for precision engine rebuilds where the crankshaft journals have been machined or ground 0.25mm (0.010") undersize. Designed to withstand the high-RPM demands and increased loads of Honda F-series and H-series engines, these bearings provide the consistent oil clearance and thermal stability required for both competitive racing and high-performance street use.

• Fits F20C, F22C, and H22A4 engine platforms
• Size: 0.25mm (0.010") Oversized bearing thickness
• Optimized for high-performance oil film retention and load capacity
• Provides reliable service in high-revving VTEC applications
• Manufacturer Part Number: 4B1912H-.25

This set includes the complete set of four rod bearings required for a full engine overhaul.

Fits 1997-2001 Honda Prelude (Base, Type SH) and 2000-2009 Honda S2000 (Base, CR) equipped with H22A4, F20C, or F22C engines.

The ACL Race Series performance engine bearings are engineered for high-RPM, high-stress applications where standard OE bearings may not provide sufficient durability. This connecting rod bearing set features a .025mm (0.001") undersize, specifically designed for crankshafts that have been precision ground or for engine builders requiring specific oil clearance tolerances to optimize lubrication and cooling.

• Manufacturer Part Number: 4B1912H-.025
• Tri-metal construction: Steel back, lead/tin/copper lining, and lead/tin/copper overplate
• Increased crush for improved bearing retention and heat dissipation
• Large chamfers to accommodate large crankshaft fillets
• High-strength overlay plate for increased fatigue resistance
• Designed for 4-cylinder Honda H22A4, F20C, and F22C engines

Fits select 1998-2006 Acura, Honda, and Isuzu models, including Accord, Civic Si, RSX, CL, Odyssey, and Oasis (V6-3.0L / V6-3.2L / K20A3 / F23A).

ACL Race Series high-performance rod bearings are engineered for high-RPM and performance-oriented engine builds. This standard-size set (4B1906HX-STD) is specifically designed with extra oil clearance to provide superior lubrication and cooling under heavy loads. These bearings offer the precise tolerances and increased durability required to replace worn factory components in demanding street and track applications.

• Manufacturer: ACL
• Part Number: 4B1906HX-STD
• Size: Standard (STD)
• Design: Extra Oil Clearance (HX)
• Series: High Performance
• Compatible Engines: K20A3, F23A

Vehicle Fitment

Fits select 1998-2006 Acura CL and RSX, Honda Accord, Civic Si, and Odyssey, and Isuzu Oasis (K20A3 / F23A engines).

This ACL High Performance Rod Bearing Set is engineered for the increased loads and RPM demands of performance engine builds. These standard-size bearings are manufactured to tight tolerances to ensure consistent oil clearance and reliable lubrication for your connecting rods, replacing worn or factory-grade components during a bottom-end rebuild.

• Manufacturer Part Number: 4B1906H-STD
• Size: Standard (STD)
• Engine Compatibility: Acura/Honda K20A3 and F23A series
• Designed for high-load, high-RPM automotive applications
• Precise fitment for reliable oil film maintenance

Fits select 2000-2011 Toyota Celica, Corolla, Matrix, Lotus Elise, Exige, and Pontiac Vibe (1.8L 2ZZ-GE).

This ACL Race Series connecting rod bearing set is engineered for high-performance 2ZZ-GE engine builds. The "HX" designation indicates these bearings provide an additional 0.001 inch of oil clearance compared to standard sizing. This increased clearance is essential for high-RPM racing applications, allowing for improved oil film thickness and flow to protect the crankshaft under extreme loads and thermal stress.

• Manufacturer Part Number: 4B1856HX-STD
• Engine Fitment: 1.8L (1796cc) 4-Cylinder 2ZZGE
• Clearance Spec: 0.001" Extra Clearance for performance oiling
• Application: Direct replacement for OE connecting rod bearings
• Compatibility: Compatible with select 2000-2011 Toyota, Lotus, and Pontiac models

Fits select 2000-2011 Toyota Celica, Corolla, Matrix, Lotus Elise, Exige, and Pontiac Vibe models equipped with the 1.8L 2ZZ-GE engine. This ACL High Performance rod bearing set is engineered for high-revving applications where standard OE components may face increased stress. Designed to meet the precise tolerances required for performance engine builds, these bearings provide the durability and reliability needed for both spirited street use and track environments.

• Manufacturer Part Number: 4B1856H-STD
• Bearing Size: Standard (STD)
• Engine Compatibility: Toyota 2ZZ-GE 1796cc I4
• Quantity: Complete set for one engine
• Material: High-strength performance bearing alloy

Fits select 1985-1992 Toyota Corolla, MR2, and Geo Prizm (1.6L).

The ACL Race Series High Performance Rod Bearing Set is engineered for high-RPM and high-load environments where precise lubrication is critical. This "HX" variant provides additional oil clearance compared to standard bearings, allowing for a thicker oil film to protect the crankshaft journals during competition use or in forced-induction 4AGZE applications.

Constructed with ACL's proven tri-metal design, these bearings feature a lead-tin-copper overlay on a copper-lead intermediate layer with a hardened steel backing. This metallurgy ensures the fatigue strength and embeddability required for modified 4AGE engines. The 4B1780HX-STD set is a direct fit for 1.6L blocks requiring standard bore sizing with extra clearance specs.

• Manufacturer Part Number: 4B1780HX-STD
• Engine Series: Toyota 4AGE / 4AGZE (1.6L)
• Size: Standard Size with Extra Oil Clearance
• Material: High-strength tri-metal
• Application: Performance and racing engines

Fits select 1985-1992 Toyota Corolla, MR2, and Geo Prizm (1.6L 4AGE / 4AGZE).

This ACL High Performance Rod Bearing Set is engineered to meet the demands of 1.6L 4AGE and 4AGZE engines. These 0.25mm oversized bearings are specifically designed for crankshafts that have been machined to an undersize, ensuring correct oil clearances and restoring engine geometry. Built to handle increased RPMs and higher stress loads, this set provides superior fatigue resistance and consistent performance for high-load applications.

• Manufacturer Part Number: 4B1780H-.25
• Engine Fitment: 1.6L (4AGE / 4AGZE)
• Bearing Size: 0.25mm Oversized
• Application: High-performance rod bearing set
• Quantity: Full engine set

Restore critical oil film clearances and maintain crankshaft stability with the ACL Standard Size Rod Bearing Set. Engineered for precise fitment and optimal performance, these bearings are a direct replacement for worn original equipment (OE) units in 1993-1997 Toyota vehicles equipped with the 7AFE 1.8L engine.

Connecting rod bearings are vital components that support the crankshaft, ensuring smooth rotation while maintaining a crucial oil film to prevent metal-on-metal contact. This ACL set provides the exact specifications needed for a proper engine rebuild or maintenance, helping to prevent premature wear and potential engine damage.

• Fitment: Toyota 7AFE 1.8L engine, 1993-1997
• Size: Standard
• Manufacturer Part Number: 4B1680A-STD
• Direct replacement for OE rod bearings

Fits select 1982-1989 Nissan 200SX, Pulsar NX, Sentra, and Stanza models equipped with the CA18 or CA20 engines. This ACL Race Series high-performance rod bearing set (MPN: 4B1630H-STD) is engineered for high-RPM applications where increased load capacity and durability are required.

Constructed with a proven tri-metal design, these bearings feature a high-strength lead-tin-copper bonding that manages heat and fatigue better than standard babbitt materials. These are standard size (STD) replacements, ideal for rebuilds using a crankshaft with original journal dimensions.

• Manufacturer Part Number: 4B1630H-STD
• Series: ACL Race Series
• Fitment: Nissan 1982-1989 (CA18 / CA20)
• Bearing Size: Standard (STD)
• Construction: Tri-metal high-performance alloy

Vehicle Fitment:

Fits select 1982-1989 Nissan 200SX, Pulsar NX, Sentra, and Stanza. Designed for demanding conditions, this ACL High Performance rod bearing set delivers the precision and durability necessary for performance engine builds. These 0.25mm oversized bearings are specifically engineered for crankshafts that have been machined, restoring critical oil clearances and providing superior fatigue resistance for Nissan CA18 and C20 engines.

• Manufacturer Part Number: 4B1630H-.25
• Bearing Oversize: 0.25mm
• Compatible Engines: Nissan CA18, C20
• Application: High Performance / Race Series
• Fitment Span: 1982-1989 Nissan

Fits select 1984-2011 Audi and Volkswagen models including A3, A4, TT, Golf, Jetta, Passat, and Beetle (1.8T / 2.0T).

This ACL High Performance connecting rod bearing set is engineered for 4-cylinder Audi and Volkswagen engines requiring a standard size, notchless bearing. Built to withstand the increased loads of performance applications, these bearings provide the reliability needed for high-RPM and high-output builds, including 1.8T, 2.0T TFSI, and 2.0T TSI platforms.

• Manufacturer Part Number: 4B1609H-STD
• Bearing Size: Standard (STD)
• Design: Notchless
• Engine Compatibility: Select 4-cylinder 1.4L, 1.6L, 1.8T, 2.0 TFSI, and 2.0 TSI
• Application: High-performance street or track use
• Construction: High-strength tri-metal design for superior load capacity

Fits select 1983-2010 Audi and Volkswagen models equipped with 1781cc and 1984cc engines (2.0T).

This ACL Race Series rod bearing set is engineered for high-performance applications where increased oil flow and reduced friction are critical. These bearings feature the CT-1 dry film lubricant coating, which provides a low-friction surface that reduces heat and helps prevent galling during cold starts or momentary oil pressure drops. The "HXC" designation indicates a set designed with extra oil clearance (0.025mm / .001") compared to standard bearings, making them ideal for high-RPM builds or engines running thicker performance oils.

Constructed with ACL's proven tri-metal design, these bearings offer a high load-bearing capacity and fatigue resistance necessary for forced induction or competitive racing environments. Each set is manufactured to exacting tolerances to ensure consistent oil film thickness across the journal.

• Manufacturer Part Number: 4B1606HXC-STD
• Bearing Size: Standard (Std)
• Clearance: Extra Oil Clearance (HXC)
• Coating: CT-1 Dry Film Lubricant
• Material: High-strength tri-metal
• Quantity: Complete set of 8 bearing halves (for 4 rods)

Fits select 1983-2010 Audi and Volkswagen models equipped with 1781cc (1.8L) and 1984cc (2.0L) engines, including the 2.0T.

This ACL High Performance Rod Bearing Set is specifically engineered for high-load engine builds where precise lubrication and heat management are critical. The "HX" designation indicates this set provides extra oil clearance, essential for performance applications that utilize high-flow oil pumps or higher viscosity oils. These bearings are designed to withstand the increased cylinder pressures found in turbocharged and high-RPM environments.

• Manufacturer Part Number: 4B1606HX-STD
• Bearing Size: Standard
• Oil Clearance: Extra Oil Clearance (approx. 0.001 in / 0.025mm additional)
• Compatible Displacements: 1781cc and 1984cc
• Application: Connects the connecting rod to the crankshaft journal
• Included: Complete set of rod bearings for one engine

Fits select 1983-2010 Audi and Volkswagen models equipped with 1781cc or 1984cc engines, including the 2.0T.

This ACL Race Series high-performance rod bearing set is engineered for demanding engine builds and high-load environments. Featuring the CT-1 dry film lubricant coating, these bearings provide a critical layer of protection during initial startup and potential oil starvation events by significantly reducing friction and heat build-up. The tri-metal hardened lead/tin/copper construction ensures superior fatigue strength and load-carrying capacity compared to standard OE components, making them ideal for turbocharged or high-RPM applications.

• Manufacturer Part Number: 4B1606HC-STD
• Engine Displacement: 1781cc (1.8L) / 1984cc (2.0L)
• Bearing Size: Standard (STD)
• Coating: CT-1 Dry Film Lubricant
• Series: ACL Race Series Performance
• Quantity: Full set for one engine

Fits select 1983-2010 Audi and Volkswagen models equipped with 1781cc and 1984cc engines (2.0T).

This ACL Race Series High Performance Rod Bearing Set is engineered for enthusiasts and racers demanding maximum durability under extreme operating conditions. Designed specifically for high-RPM applications, these H-Series bearings utilize a tri-metal composition that provides superior heat resistance and load-carrying capacity compared to standard replacement components.

Each bearing features a high-strength steel backing with a lead-tin-copper overlay, ensuring excellent fatigue strength and embeddability. This specific set is provided in a standard (STD) size for engines maintaining factory crank journal specifications, providing the precision tolerances required for high-load engine builds.

• Manufacturer Part Number: 4B1606H-STD
• Bearing Size: Standard (STD)
• Material: Tri-metal hardened lead-tin-copper
• Engine Displacement: 1781cc and 1984cc
• Series: ACL Race Series (H-Series)
• Included: Complete set of 4-pair connecting rod bearings

Fits select 1983-2010 Audi and Volkswagen models with 1781cc (1.8L) and 1984cc (2.0L) engines, including the 2.0T. This ACL High Performance rod bearing set is designed for engine builders requiring an 0.025 oversized bearing to compensate for crankshaft machining while maintaining precise oil clearances.

Engineered for high-stress applications, these bearings feature a tri-metal construction designed to withstand higher RPMs and increased loads compared to standard OE components. Whether you are refreshing a high-mileage daily driver or building a forced-induction track engine, these bearings provide the thermal conductivity and fatigue strength necessary for long-term durability.

• Manufacturer Part Number: 4B1606H-.025
• Oversize: 0.025
• Engine Fitment: 1781cc / 1984cc (including 2.0T)
• Materials: High-strength tri-metal design for superior load capacity
• Application: Ideal for performance rebuilds requiring oversized shells

Fits select 2015-2021 BMW M2, M3, and M4 models (2.0L).

The ACL Race Series standard size connecting rod bearing set is engineered for high-performance applications where increased load capacity and engine RPM demand superior durability. These tri-metal bearings are designed to provide the reliable oil clearance and heat dissipation necessary for the N20B20 and N26B20 2.0L inline engines, whether on the street or the track.

• Brand: ACL
• Series: Race Series
• Part Type: Connecting Rod Bearing Set
• Bearing Size: Standard (STD)
• MPN: 4B1584H-STD
• Engine Fitment: 2.0L Inline (N20B20 / N26B20)
• Construction: High-strength tri-metal design for optimized fatigue resistance

Fits 1988-1991 BMW M3 Base models equipped with S14B20, S14B23, or S14B25 inline-four engines.

Engineered for high-performance and competition use, this ACL Race Series connecting rod bearing set is designed to handle the high RPM and increased loads of the BMW S14 engine. These bearings feature a high-strength tri-metal construction with a hardened steel backing, providing the superior fatigue resistance and oil film maintenance required for both street performance and track applications.

• Manufacturer Part Number: 4B1568H-STD
• Bearing Size: STD (Standard)
• Engine Application: S14B20, S14B23, S14B25 I4
• Material: Tri-metal copper-lead alloy with nickel barrier and lead-tin-copper overlay
• Application: Direct replacement for OE connecting rod bearings