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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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O-Rings
O-rings are fundamental sealing components in virtually every automotive fluid system, from fuel and oil to coolant and air conditioning. This collection covers a wide selection of sizes and materials designed to match common automotive demands, whether you are rebuilding a fuel injector, resealing a thermostat housing, or restoring an air conditioning line. Choosing the right O-ring means matching the material to the fluid and temperature environment, and getting the exact cross-section and inner diameter for a leak-free fit.
- Available in popular materials including Nitrile (Buna-N), Viton (FKM), and silicone, each suited to different temperature and chemical resistance needs
- Standard and metric sizing to cover import and domestic applications
- Used across engine, transmission, HVAC, and hydraulic systems
- Look for durometer hardness and temperature range to match your application requirements
When selecting an O-ring from this collection, verify the required cross-section thickness (e.g., 1.5mm, 3mm) and inner diameter, and confirm the material is compatible with the fluid it will contact. For dynamic applications, consider a harder durometer; for static seals, a softer compound often works best. Always replace O-rings whenever a component is disassembled to ensure a reliable seal.
48 products
48 products
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Radium Engineering 6AN Viton O-rings are designed to provide a durable, leak-proof seal for -6AN ORB (O-Ring Boss) ports. These O-rings are a critical component for plumbing high-performance fuel, oil, and coolant systems where standard rubber seals may degrade over time.
Constructed from high-grade Viton, these seals offer superior chemical resistance against modern automotive fluids, including gasoline, ethanol-blended fuels (E85), and high-temperature engine oils. This 5-pack ensures you have the necessary replacements for routine maintenance or when installing new ORB fittings into fuel rails, surge tanks, or catch cans.
- Material: High-grade Viton for fuel and oil resistance
- Compatibility: -6AN ORB (9/16"-18) fittings
- Quantity: 5-Pack
- Manufacturer Part Number: 18-0043-06
The Radium Engineering O-Ring Multi-Pack (MPN 18-0043) provides a reliable assortment of replacement seals for high-performance fluid systems. These O-rings are specifically designed for O-Ring Boss (ORB) adapter fittings, ensuring a secure, leak-free connection for your fuel, oil, or coolant plumbing.
- Includes O-rings sized for 6AN, 8AN, and 10AN fittings
- Essential for maintaining or serviceing ORB adapters and fuel system components
- High-quality construction for durability in pressurized automotive environments
- Manufacturer Part Number: 18-0043
Maintain the sealing integrity of your fuel system with this replacement body O-ring pair from Radium Engineering. These O-rings are essential service components designed specifically for Radium Engineering fuel filter housings, ensuring a leak-free seal between the filter body and the housing end caps.
Replacing these O-rings during routine filter element inspections or swaps is a critical step in preventative maintenance to avoid external fuel leaks and pressure drops. These components are engineered to withstand the demands of performance fuel systems and provide a precise fit for Radium-specific assemblies.
- Manufacturer Part Number: 18-0022
- Application: Radium Engineering Fuel Filter Bodies
- Quantity: Pair (Set of 2)
- Purpose: Replacement seals for housing maintenance
$2.60
Maintain a secure, leak-free seal in your nitrous system with the Nitrous Express 1-1/8" O-Ring. This precision-sized replacement seal is designed for use with standard nitrous bottle valves, ensuring proper pressure retention and preventing hazardous leaks during system operation or storage.
Over time, bottle valve O-rings can become compressed, flattened, or damaged during repeated refills and bottle swaps. Replacing a worn seal with this genuine Nitrous Express component restores the integrity of the connection at the bottle, ensuring consistent performance and safety. It is an essential spare part for any racer's pit bag or tool kit.
- Direct replacement for Nitrous Express bottle valves
- Compatible with 5lb, 10lb, 12lb, and 15lb nitrous bottles
- Size: 1-1/8 inch diameter
- Ensures a pressure-tight seal to prevent nitrous loss
- Manufacturer Part Number: 11028
📘 Guides & Manuals
$28.00
Maintain the precision and reliability of your fuel system with the Fuelab 14603 Diaphragm & O-Ring Kit. This genuine replacement service kit is designed specifically for all 535xx and 545xx series fuel pressure regulators, ensuring a proper seal and consistent pressure regulation.
Over time, internal components can wear or become damaged during disassembly. This kit provides the critical parts needed to refresh your regulator to factory standards, preventing leaks and ensuring your fuel system performs as intended. It is an essential item for any professional rebuild or routine maintenance schedule.
- Direct replacement for all Fuelab 535xx and 545xx series regulators
- Includes high-quality replacement diaphragm
- Includes necessary O-rings for internal sealing
- Genuine Fuelab components for chemical resistance and durability
- Manufacturer Part Number: 14603
📘 Guides & Manuals
$28.00
Maintain consistent fuel pressure and prevent leaks with the Fuelab 14602 Diaphragm and O-Ring Rebuild Kit. This kit is engineered specifically for servicing Fuelab 515xx and 525xx series fuel pressure regulators that utilize the Large Seat internal configuration. Over time, exposure to heat and various fuel chemistries can degrade internal seals; this kit provides the essential components to restore your regulator to peak operating condition.
- Direct replacement for Fuelab 515xx and 525xx series fuel pressure regulators
- Specifically compatible with Large Seat orifice configurations
- Includes high-quality replacement diaphragm and all necessary O-rings
- Essential for routine fuel system maintenance and ensuring accurate pressure regulation
- Manufacturer Part Number: 14602
📘 Guides & Manuals
$14.04
Maintain the integrity of your fluid transfer system with this 10-piece pack of Fragola Performance Systems O-rings. These replacement seals are precision-engineered for use with -8AN (3/4" I.D.) fittings, providing a reliable, leak-proof barrier for fuel, oil, and coolant plumbing applications.
- Designed for -8AN (3/4" I.D.) specific fittings and adapters
- Essential for ensuring airtight and leak-free performance in high-pressure systems
- Replacement seals for worn or damaged O-rings in plumbing assemblies
- Includes 10 O-rings per package
- Manufacturer Part Number: 999111
$12.07
Maintain a leak-free seal on your plumbing system with this 10-pack of Fragola Performance Systems replacement O-rings. Specifically sized for -6AN fittings with a 9/16" internal diameter, these O-rings are essential components for ensuring a secure, pressure-tight connection at the adapter interface. Keeping spares on hand is recommended for any service involving the disassembly of fuel, oil, or coolant lines.
- Compatibility: Specifically designed for -6AN (9/16" I.D.) fittings
- Application: Replacement seals for automotive plumbing and adapter fittings
- Quantity: Pack of 10 O-rings
- Essential for preventing fluid leaks during assembly or maintenance
- Manufacturer Part Number: 999110
$40.86
Optimized for high-flow fuel, oil, and cooling systems, the Fragola Performance Systems 495109-BL radius port adapter provides a reliable, leak-free connection between -12AN lines and 1-1/16-12 O-ring boss (ORB) ports. Unlike standard straight-cut port fittings, this radius fitting features a smooth, contoured entry designed to minimize fluid turbulence and maximize flow efficiency.
Precision-machined for exact tolerances, this adapter includes a high-quality O-ring to ensure a positive seal without the need for thread sealant. The durable black anodized finish provides excellent corrosion resistance and a professional look for any performance plumbing project.
- Brand: Fragola Performance Systems
- Part Number: 495109-BL
- Fitting Style: Radius O-Ring Port Adapter
- Size: -12AN to 1-1/16-12 (-12 ORB)
- Finish: Black Anodized
- Feature: Radiused entry for improved fluid dynamics
$40.89
The Fragola Performance Systems 495107-BL is a precision-engineered adapter designed for high-flow plumbing applications. This fitting converts a -12 ORB (O-Ring Boss) port to a -10AN male flare, utilizing a radius entry design to significantly reduce fluid turbulence and cavitation compared to standard squared-off adapters. This makes it an essential component for high-performance fuel systems, oiling circuits, and cooling loops where flow efficiency is critical.
- Manufacturer Part Number: 495107-BL
- Fitting End A: -10AN Male Flare
- Fitting End B: -12 ORB (1-1/16-12 Thread)
- Radius Entry: Optimized internal geometry for maximum fluid flow and minimal pressure drop
- Material: Machined from lightweight 6061-T6 aluminum
- Finish: Corrosion-resistant black anodized coating
- Includes: High-performance O-ring for a reliable, leak-proof seal
$28.22
The Fragola Performance Systems 495106-BL is a precision-engineered radius port adapter designed to optimize fluid dynamics in high-performance plumbing systems. Unlike standard fittings with sharp internal steps, this radius fitting features a contoured entry that significantly reduces turbulence and improves flow rates for fuel, oil, or coolant applications.
- Manufacturer Part Number: 495106-BL
- Fitting Type: Radius Port Adapter (ORB to AN)
- Size A: -10AN Male Flare
- Size B: 7/8-14 (10) Thread with O-Ring seal
- Material: Lightweight, high-strength aluminum
- Finish: Black anodized for superior corrosion resistance and durability
Machined to exacting tolerances, this fitting ensures a reliable, leak-proof connection in high-pressure environments. It is an essential component for plumbing fuel rails, dry sump systems, and oil filter housings that utilize a -10 size port.
$29.64
The Fragola Performance Systems 495105-BL is a precision-engineered adapter designed for high-performance plumbing in fuel, oil, and cooling systems. This radius fitting features a -10AN flare on one end and a 3/4-16 (Size 8) O-ring port connection on the other, ensuring a secure, leak-free seal under high-pressure conditions.
Unlike standard adapters, the radius entry design is specifically machined to reduce fluid turbulence and maximize flow efficiency. Manufactured from high-grade aluminum with a durable black anodized finish, this fitting provides excellent corrosion resistance and a professional look for any engine bay.
- Manufacturer Part Number: 495105-BL
- Size: -10AN to 3/4-16 (AN8)
- Style: Radius Port (ORB)
- Finish: Black Anodized
- Seal: Includes pre-installed O-ring
- Material: Lightweight aluminum construction
$26.66
Ensure a secure, leak-free connection in your high-performance fluid system with the Fragola -8AN x 7/8-14 (10) Radius Port Fitting. This adapter is specifically engineered to provide a transition from a -10 ORB (O-Ring Boss) port to a -8AN flare, making it ideal for fuel, oil, and coolant plumbing applications.
The radius entry design is precision-machined to optimize fluid dynamics, reducing turbulence and pressure drop compared to standard straight-cut adapters. Finished in black anodizing for superior corrosion resistance and durability, this fitting includes a high-quality O-ring to ensure a positive seal against the port face without the need for thread sealant.
- Manufacturer Part Number: 495104-BL
- Fitting Size: -8AN Male
- Port Thread: 7/8-14 (-10 ORB)
- Style: Radius entry for high-flow efficiency
- Material: Lightweight aluminum construction
- Finish: Black anodized
- Included Hardware: Sealing O-ring
$24.21
The Fragola 495103-BL -8AN to 3/4-16 radius O-ring port fitting is engineered for high-performance fluid delivery systems. By utilizing a radiused entry, this adapter reduces fluid turbulence and pressure drop, making it an essential component for high-flow fuel, oil, or cooling systems.
- Manufacturer Part Number: 495103-BL
- Inlet/Outlet: -8AN to 3/4-16 (8 SAE)
- Design: Radius entry for optimized flow characteristics
- Material: Precision-machined lightweight aluminum
- Finish: Durable black anodized for corrosion resistance
- Includes: High-quality O-ring for a positive, leak-free seal
Precision-machined to meet exacting tolerances, this fitting provides a secure connection between AN hose ends and ORB ports, ensuring reliability under high-pressure conditions.
$18.14
The Fragola Performance Systems 495102-BL is a precision-engineered radius fitting designed to transition from a 9/16-18 (-6 AN) O-ring boss port to a -8AN male flare. Engineered with a radiused entry, this adapter reduces fluid turbulence and pressure drop, making it an essential component for high-performance fuel, oil, and cooling systems where maximizing flow efficiency is a priority.
- Part Type: Radius O-Ring Adapter Fitting
- Size: -8AN Male to 9/16-18 (-6 AN) ORB
- Features a radiused entry for optimized fluid dynamics
- Includes a high-quality O-ring for a secure, leak-free seal
- Finished in black anodizing for superior corrosion resistance and durability
- Manufacturer Part Number: 495102-BL
$18.05
The Fragola Performance Systems 495101-BL is a high-performance radius port adapter designed to transition a -6AN flare connection to a 3/4-16 (-8 AN) O-ring boss port. Unlike standard adapters, this radius fitting features a contoured internal entry to minimize fluid turbulence and maximize flow efficiency in critical fuel, oil, or coolant systems.
Machined from lightweight aluminum and finished in a durable black anodized coating, this fitting ensures a secure, leak-free seal using the included O-ring. It is an essential component for plumbing aftermarket fuel rails, dry sump tanks, or pump housings where flow volume and reliable sealing are priorities.
- Manufacturer Part Number: 495101-BL
- Fitting Style: Radius Port Adapter
- Size: -6AN Male to 3/4-16 (-8 AN) ORB
- Material: Anodized Aluminum
- Finish: Black
- Includes O-ring for a positive seal
$17.13
The Fragola 495100-BL Radius O-Ring Port (ORB) fitting is engineered to provide a secure, leak-free connection in high-performance fluid systems. Unlike standard fittings, the radius entry design smooths the transition for fluid entering the fitting, significantly reducing turbulence and improving flow rates. This adapter is precision-machined from 6061-T6 aluminum and finished with a durable black anodizing to ensure long-term corrosion resistance in fuel, oil, and coolant applications.
- Part Type: Radius O-Ring Port Adapter
- Size: -6AN Male to 9/16-18 (-6 ORB) Male
- Material: 6061-T6 Aluminum
- Finish: Black Anodized
- Radius entry for optimized fluid dynamics
- Includes high-quality O-ring for a positive seal
- Manufacturer Part Number: 495100-BL
$22.50
This Fragola Performance Systems adapter (MPN: 491971-BL) provides a reliable, leak-free transition between a standard -6AN hose end and a 16mm x 1.5 O-ring port. Precision-machined for exact tolerances, this fitting is ideal for high-pressure fluid plumbing in fuel, power steering, and cooling systems where metric O-ring seals are required.
- Part Type: Fluid Adapter Fitting
- Side A: -6AN
- Side B: 16mm x 1.5 Female
- Seal Type: O-Ring Seal
- Finish: Black Anodized
- Manufacturer Part Number: 491971-BL
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