Fits select 1980-2018 American Motors, Buick, Cadillac, and Chevrolet vehicles. This complete differential service kit provides the necessary lubricants for standard-duty maintenance and service on conventional differentials. The kit features a non-synthetic Union 76 80W90 formulation designed for consistent lubrication and thermal stability across various operating temperatures.

To ensure smooth operation in clutch-driven positraction units and limited-slip differentials (LSD), this package includes a 4oz bottle of Yukon Limited Slip Friction Modifier. This additive is specifically formulated to reduce friction-related noise and eliminate clutch chatter, restoring the smooth engagement required for street and off-road performance.

• Includes (3) quarts of 80W90 conventional non-synthetic gear oil
• Includes (1) 4oz bottle of Yukon Positraction limited slip additive
• Reduces noise and chatter in clutch-driven LSD units
• Designed for all types of conventional differentials

Fits select 1980-2018 American Motors, Buick, Cadillac, and Chevrolet vehicles. This Yukon Gear service pack provides the necessary fluid for a standard differential oil change or following a gear set installation.

This Penzoil 80W90 conventional gear oil is a non-synthetic formulation engineered for reliable lubrication across all types of differentials. Designed to meet the requirements of classic and modern axles alike, this oil provides the necessary film strength and thermal stability to protect ring and pinion sets under standard operating conditions. Whether you are performing routine maintenance on a classic Buick Regal or servicing a late-model Cadillac Escalade, this three-quart kit ensures you have the volume required for most passenger car and light truck differential housings.

• Oil Type: Conventional (Non-Synthetic)
• Viscosity: 80W90
• Volume: 3 Quarts (Three 1-quart bottles)
• Manufacturer: Yukon Gear
• Product Line: Penzoil / Union 76

This professional-grade differential service kit fits select 1980-2018 American Motors, Buick, Cadillac, and Chevrolet vehicles. It provides the essential high-performance lubricants needed to refresh your rear end or complete a gear installation with components trusted by professional installers.

Redline Synthetic Shock Proof oil is engineered for extreme protection, offering a high film strength that cushions gear teeth under heavy loads. To ensure quiet and chatter-free operation in limited-slip differentials, the included Yukon Gear Positraction additive modifies friction to maintain the correct lock-up characteristics. This kit is ideal for maintaining drivetrain longevity and performance in both daily drivers and high-torque applications.

• 3 Quarts of Redline Synthetic Shock Proof Gear Oil
• 1 Bottle of Yukon Gear Positraction Limited Slip Additive
• High-strength synthetic formula reduces wear and friction
• Eliminates limited-slip chatter and improves power transfer
• Compatible with a wide range of GM and AMC 10-bolt and 12-bolt applications

The Yukon Gear & Axle YSPXP-013 is a precision-engineered replacement cross pin shaft designed specifically for Dana Spicer 44 standard open differentials. This shaft serves as the critical pivot point for the spider gears within the carrier, maintaining proper alignment and ensuring smooth power delivery. During a differential service or rebuild, replacing a worn, scored, or pitted cross pin is essential to prevent internal gear failure and housing damage.

Fits select 1953-2002 Chevrolet, Dodge, Ford, GMC, and Jeep vehicles including the Blazer, Ram 1500/2500, Bronco, F-100/F-150/F-250, and CJ-series (5.9L).

• Fits Dana Spicer 44 standard open differentials only
• Machined to rigorous tolerances for reliable gear engagement
• Direct replacement for worn or damaged factory cross pin shafts
• Essential component for internal differential gear set maintenance
• Manufacturer Part Number: YSPXP-013

Fits select 1954-2003 Chevrolet, Dodge, Ford, GMC, Jeep, and Plymouth models with a Dana 60 open differential and 30-spline axles.

The Yukon Gear & Axle YPKD60-S-30 spider gear kit is a professional-grade solution for rebuilding or restoring a Dana 60 open differential. Manufactured using higher quality materials and more precise techniques than standard OEM components, this kit ensures a longer-lasting gear set and smoother operation. It provides everything necessary to replace worn or damaged internals that can cause driveline play or noise.

• Direct replacement for Dana Spicer 60 open differentials
• Compatible with 30-spline axle shafts
• Engineered for precise fitment and improved durability over factory internals
• Manufacturer Part Number: YPKD60-S-30

Kit Includes:

• (2) Side gears
• (2) Pinion gears
• (1) Cross pin shaft
• (1) Roll pin
• Spider gear thrust washers

Fits select 1999-2010 Ford E-250, E-350, Excursion, F-150, F-250, and F-350 models with the 10.5-inch rear differential.

This Yukon Gear & Axle High Performance ring and pinion gear set is engineered to provide reliable torque transfer and durability for heavy-duty Ford applications. Whether you are optimizing your drivetrain for larger tires or restoring factory performance, the 3.73 gear ratio offers a balance of acceleration and highway cruising efficiency. Yukon utilizes advanced heat-treating techniques and precise machining to ensure consistent gear tooth contact and a superior surface finish that stands up to high-stress conditions.

• Ring Gear Diameter: 10.50 inches
• Pinion Spline Count: 31-Spline
• Gear Ratio: 3.73
• Ring Gear Bolt Count: 12
• Material: High-strength steel with advanced heat treatment
• Manufacturer Part Number: YG F10.5-373-31

Designed for high-torque applications and custom drivetrain builds, the Yukon Gear & Axle YA WFF35-39.5 replacement axle kit provides professional-grade strength for Dana Spicer 60, 70, and 80 rear ends. These axles are engineered from high-tensile 4340 chromoly steel, offering a significant upgrade over factory shafts for vehicles running oversized tires or lockers. The cut-to-length design allows for precise fitment between 37 and 39.5 inches, making it a versatile solution for varying track widths.

• Compatible with Dana Spicer 60, 70, and 80 rear differentials
• High-strength 4340 chromoly steel construction for maximum durability
• Cold roll formed splines preserve material grain flow for superior toughness
• Advanced induction coil heat treating process reduces the risk of shaft failure
• 35-spline count for high-strength differential compatibility
• 8 x 3.96 inch bolt pattern
• Cut-to-length versatility: fits 37 inch to 39.5 inch applications
• Manufacturer Part Number: YA WFF35-39.5

Fits select 1999-2017 Buick, Cadillac, Chevrolet, and GMC vehicles with the GM 8.6-inch rear differential.

The USA Standard Gear Pinion Installation Kit is an efficient solution for gear swaps or repairs on lower-mileage vehicles where the carrier bearings and races are still within service limits and can be reused. By focusing on the pinion assembly, this kit provides the essential precision components required to reset your pinion depth and preload without the added expense of a complete master overhaul kit.

This kit utilizes premium Koyo bearings and races, ensuring your differential rebuild meets high standards for fit and longevity. USA Standard Gear conducts application-specific research to ensure that every seal, nut, and shim included matches the tolerances of the GM 8.6-inch axle housing.

• Designed for GM 8.6-inch rear differentials
• Includes premium Koyo bearings and races
• Ideal for vehicles where carrier bearings do not require replacement
• Comprehensive pinion-side hardware included for a professional install
• Manufacturer Part Number: ZPKGM8.6-A

Kit Includes: Pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound, and application brush.

Fits 1998-2002 Dodge trucks equipped with the NV4500 5-speed manual transmission.

The USA Standard Gear NV4500 Shifter Stub (ZMNV25982) is a precision-engineered replacement for worn or damaged factory stubs. Designed for manual transmission applications featuring the 4-bolt mounting pattern, this stub restores the mechanical connection between the shift lever and the transmission's internal shift tower. Over time, factory stubs can develop play or fail, leading to a vague gear selection; this component restores the crisp, positive engagement required for heavy-duty truck use.

• Direct replacement for the original equipment shifter stub
• Compatible with NV4500 5-speed manual transmissions
• Heavy-duty 4-bolt mounting base for secure installation
• Restores precise shifting feel and eliminates gear selector play
• Manufacturer Part Number: ZMNV25982

Fits select 1992-1996 Chevrolet, Dodge, and GMC trucks and vans (including Ram 1500/2500/3500, C/K Series, and P-Chassis) equipped with the NV4500 manual transmission.

This USA Standard Gear counter shaft gear cluster is engineered as a direct replacement component for the NV4500 5-speed manual transmission. Designed for durability and precise tooth geometry, this cluster restores smooth gear transitions and proper power transfer within the gearbox. This specific unit is intended for use in transmission cases that utilize a 2-3/4" (2.75") idler, ensuring a correct fit and alignment with the existing geartrain.

• Manufacturer Part Number: ZMNV22608
• Transmission Type: NV4500 5-Speed Manual
• Component: Counter Shaft Gear Cluster
• Requirement: Must be used with cases featuring a 2-3/4" idler diameter
• Construction: High-strength steel alloy for long-term service life

Fits 1966-1974 Muncie manual transmissions.

This Yukon Gear transmission overhaul kit provides the essential components required for a complete rebuild of your Muncie gearbox. It is engineered to restore factory-spec shifting performance and drivetrain reliability by replacing worn internal components that cause gear whine, vibration, or grinding during shifts.

• Includes high-quality bearings and synchronizer rings (synchros)
• Specifically designed for 1966-1974 Muncie manual transmissions
• Replaces worn OE internals to restore smooth gear engagement
• Engineered for precise tolerances and durability
• Manufacturer Part Number: ZMMK116WS

Fits select 2005-2018 Dodge and Ram 2500 and 3500 trucks equipped with the G56 6-speed manual transmission.

This USA Standard Gear bearing retainer is a precision-engineered replacement for the factory component in your G56 manual transmission. As a critical structural part of the transmission assembly, the bearing retainer secures the input shaft bearing in place and provides the mating surface for the release bearing to slide upon. Replacing a worn or grooved retainer is essential for smooth clutch operation and proper shaft alignment.

Built from high-strength cast iron, this retainer is designed to withstand the heavy-duty cycles and high torque loads typical of Ram heavy-duty applications. It serves as a direct-fit solution for rebuilds or repairs where the original equipment housing has become scored or damaged.

• Specifically designed for the G56 manual transmission
• Durable cast iron construction for enhanced service life
• Precision machined for a direct-fit replacement to OE specifications
• Essential for proper input shaft bearing retention and clutch release function
• Manufacturer Part Number: ZMG56-6C