Harley Seals/Orings and Kits
Harley Bike Engine Seals, O-Rings & Kits at JJ Motorsports
Keep your Harley leak-free with premium Cometic seals and O-rings from JJ Motorsports, featuring Viton valve stem seals, pushrod tube O-rings, and crankcase seals for reliable performance on Twin Cam, Evo, Sportster, and Big Twin engines. These high-temp, oil-resistant components ensure perfect sealing and long-term durability.
Shop Cometic for race-proven quality. Explore related categories such as Harley engine for gaskets and rebuild kits, or Harley for cams and oil pumps to complete your engine refresh.
Top Harley Engine Seals & O-Rings
- Cometic Engine Crankcase Seal C9682 – High-quality main seal for Twin Cam and Evo crankcases; prevents oil leaks at the mainshaft.
- Cometic Valve Stem Seal Viton C9166 – Viton valve stem seals; heat- and oil-resistant for Big Twin and Sportster heads.
- Cometic Pushrod Tube O-Ring C9584 – Pushrod tube O-ring set; perfect seal between cylinder and rocker box on Evo and Twin Cam.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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JAMES GASKET Small Pushtube Cork 17955-36
JAMES GASKET
$58.90A properly sealed pushrod tube is critical to maintaining oil pressure and preventing leakage in high-performance engines. The JAMES GASKET Small Pushtube Cork delivers reliable sealing where your engine's internal passages meet external components,...DS173499- SKU:
- DS173499
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 100 PACK
- APPLICATION:
- PUSHROD COVER
- PRODUCT NAME:
- SEAL
$58.90 -
JAMES GASKET Fuel Fitting O-Ring - FL 27237-95
JAMES GASKET
$6.60Fuel system integrity depends on reliable sealing at every connection point, and this JAMES GASKET o-ring ensures a leak-free fit where it matters most. Designed to OEM specifications, it eliminates the risk of fuel weeping or pressure loss that can...DS173482- SKU:
- DS173482
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- O-RING
- APPLICATION:
- FUEL INJECTOR
- UNITS:
- 10 PACK
$6.60 -
JAMES GASKET Internal Seal - .062" - Blue Twin Cam 26995-97-X
JAMES GASKET
$29.00Internal gasket seals are critical to maintaining crankcase pressure and preventing oil leakage in high-performance engines—especially in forced induction applications where pressure spikes demand precision engineering. A failing internal seal...DS173479- SKU:
- DS173479
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- APPLICATION:
- INTAKE MANIFOLD
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
$29.00 -
JAMES GASKET Derby Nylon Washer 31433-84
JAMES GASKET
$7.30Derby covers demand precision sealing to prevent oil leakage and maintain engine integrity during high-RPM operation. This JAMES GASKET nylon washer provides the exact fitment and material consistency needed for reliable derby cover assembly, whether...DS173471- SKU:
- DS173471
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- UNITS:
- 20 PACK
- APPLICATION:
- DERBY COVER
- MATERIAL:
- NYLON
$7.30 -
JAMES GASKET Large Pushrod Cork - Big Twin 17955-48
JAMES GASKET
$72.10A worn or degraded pushrod cork gasket compromises engine sealing and can lead to oil leakage around your Big Twin's pushrod tubes—a common failure point that affects both performance and longevity. The JAMES GASKET Large Pushrod Cork delivers OEM-grade...DS173468- SKU:
- DS173468
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 100 PACK
- PRODUCT NAME:
- SEAL
- APPLICATION:
- PUSHROD COVER
$72.10 -
JAMES GASKET Drain Plug/Oil Pump Cap O-Ring 11105-X
JAMES GASKET
$7.80A compromised drain plug o-ring is an invisible threat to your engine's health—it allows oil seepage that compounds into costly damage over time. The JAMES GASKET 11105-X is a precision replacement that restores a complete seal, preventing unwanted oil...DS173430- SKU:
- DS173430
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- OIL PUMP
- SIZE:
- OVERSIZE
- APPLICATION:
- DRAIN PLUG
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- UNITS:
- 25 PACK
$7.80 -
JAMES GASKET Trans Double Lip Seal 37741-67-A
JAMES GASKET
$17.95Transmission seals are critical to maintaining hydraulic pressure and preventing costly fluid leaks that compromise performance and reliability. The JAMES GASKET Trans Double Lip Seal 37741-67-A is engineered with dual-lip geometry to provide superior...DS173426- SKU:
- DS173426
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- APPLICATION:
- MAIN DRIVE GEAR
- RIDING STYLE:
- STREET
$17.95 -
JAMES GASKET Inner Primary Bearing Seal 12052-F
JAMES GASKET
$19.10The inner primary bearing seal is a critical component that prevents fluid leakage and contamination in your primary drivetrain, directly impacting clutch performance and overall reliability. A compromised seal can lead to oil loss, metal-on-metal...DS173424- SKU:
- DS173424
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- APPLICATION:
- INNER PRIMARY
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$19.10 -
JAMES GASKET Shifter Shaft Seal 12045-M
JAMES GASKET
$18.50A leaking shifter shaft seal compromises your transmission's integrity and can lead to costly fluid loss and contamination. The JAMES GASKET Shifter Shaft Seal 12045-M provides a reliable OEM-equivalent solution that restores a watertight seal at the...DS173423- SKU:
- DS173423
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- SHIFTER SHAFT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- UNITS:
- 5 PACK
$18.50 -
JAMES GASKET Upper Pushrod Seal 17955-36-A
JAMES GASKET
$65.80Upper pushrod seals are critical to maintaining crankcase pressure and preventing oil bypass in high-revving engines. A compromised seal leads to oil leakage, reduced lubrication efficiency, and potential engine damage under racing conditions. The JAMES...DS173383- SKU:
- DS173383
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 100 PACK
- APPLICATION:
- PUSHROD COVER
- PRODUCT NAME:
- SEAL
$65.80 -
JAMES GASKET Pushrod Tube Seal - Twin Cam 11293-TC
JAMES GASKET
$19.95Pushrod tube seals are critical wear items that directly impact cam cover integrity and oil containment on Twin Cam engines. A failed seal compromises both performance and engine longevity, making a complete, quality replacement kit essential during any...DS173247- SKU:
- DS173247
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- PUSHROD TUBE
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL KIT
$19.95 -
JAMES GASKET Umbrella Valve Seal - Twin Cam 26858-99
JAMES GASKET
$25.50Valve seal degradation leads to oil consumption, blue smoke, and compromised combustion—issues that demand a precision replacement, not a Band-Aid solution. The JAMES GASKET Umbrella Valve Seal restores proper oil control at the valve stem, eliminating...DS173232- SKU:
- DS173232
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- UMBRELLA VALVE
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- UNITS:
- 6 PACK
$25.50 -
JAMES GASKET Derby Cover O-Ring - Big Twin 25416-99
JAMES GASKET
$11.50A failing derby cover seal is an easy way to turn a clean engine bay into an oil-weeping mess. The JAMES GASKET Derby Cover O-Ring is a molded rubber beaded seal with a metal insert, engineered to create a reliable, long-lasting barrier against oil...DS173230- SKU:
- DS173230
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- APPLICATION:
- DERBY COVER
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- O-RING
- UNITS:
- 5 PACK
$11.50 -
JAMES GASKET Motor Sprocket Seal - Twin Cam 12068
JAMES GASKET
$19.80A worn or leaking motor sprocket seal is one of the most common sources of oil seepage on Twin Cam engines—and ignoring it accelerates damage to your timing components and creates a mess in your engine bay. The JAMES GASKET Motor Sprocket Seal...DS173214- SKU:
- DS173214
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- MOTOR SHAFT
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$19.80 -
JAMES GASKET Cam Support O-Ring - Twin Cam 11298
JAMES GASKET
$5.30Cam support o-rings are critical sealing components that prevent oil leakage around your Twin Cam's cam support system. A degraded or missing o-ring leads to messy leaks, potential oil starvation, and costly engine damage. The JAMES GASKET 11298 delivers...DS173212- SKU:
- DS173212
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
- APPLICATION:
- CAM SUPPORT
- RIDING STYLE:
- STREET
- TYPE:
- PLUG
$5.30 -
JAMES GASKET Upper Pushrod O-Ring - Twin Cam 11293
JAMES GASKET
$8.60A failing upper pushrod O-ring compromises cylinder head sealing and can lead to oil leaks that degrade engine performance and reliability. This genuine JAMES GASKET replacement ensures a proper seal on your Twin Cam engine, preventing costly oil loss...DS173210- SKU:
- DS173210
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- OIL FILTER
- PRODUCT NAME:
- O-RING
- APPLICATION:
- UPPER PUSHROD
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- APPLICATION:
- OIL PUMP
- UNITS:
- 10 PACK
$8.60 -
JAMES GASKET Air Cleaner Back Plate O-Ring - Twin Cam 11292
JAMES GASKET
$11.10A compromised air cleaner seal allows unfiltered air to bypass your intake system, degrading combustion efficiency and increasing engine wear. The JAMES GASKET Air Cleaner Back Plate O-Ring restores a proper seal on your Twin Cam, ensuring consistent air...DS173209- SKU:
- DS173209
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- BACK PLATE ASSEMBLY
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
- APPLICATION:
- CYLINDER HEAD
$11.10 -
JAMES GASKET Manifold Sensor Seal - Twin Cam 11291
JAMES GASKET
$15.60A leaking manifold sensor seal compromises engine diagnostics and can trigger false fault codes that mask real issues. The JAMES GASKET Manifold Sensor Seal maintains a reliable seal between your intake manifold and oxygen sensor, ensuring accurate...DS173208- SKU:
- DS173208
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- MAP SENSOR
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- PRODUCT NAME:
- SEAL
$15.60 -
JAMES GASKET Neutral Sensor O-Ring - Twin Cam 11290
JAMES GASKET
$15.70A worn or deteriorated neutral sensor O-ring can cause erratic neutral position reading, leading to shifting issues and potential transmission problems. This OEM-quality replacement from JAMES GASKET ensures a proper seal at the neutral sensor, restoring...DS173207- SKU:
- DS173207
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$15.70 -
JAMES GASKET Crank Sensor O-Ring - Twin Cam 11289
JAMES GASKET
$3.90A failing crank sensor o-ring compromises engine timing accuracy and fuel delivery precision, leading to rough idle, poor fuel economy, and potential ignition misfires. The JAMES GASKET Crank Sensor O-Ring is engineered to maintain a perfect seal on your...DS173206- SKU:
- DS173206
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- APPLICATION:
- CAM POSITION SENSOR
- UNITS:
- 10 PACK
$3.90
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Engine Seals, O-Rings, and Kits
- Compatibility: Ensure seals and O-rings match your Harley's engine type (e.g., Big Twin, Twin Cam, Evo) and model specifics (e.g., FL/FLH, XL, Softail). Use the vehicle selector for year-specific fits (e.g., 1973-1983 for fork seals, 1990-up for drive gear seals) to prevent leaks or fit issues.
- Type of Use: For high-temperature or oil-exposed areas, opt for Viton seals for superior resistance; standard rebuilds benefit from nitrile or silicone O-rings for reliable sealing in street riding conditions.
- Components and Upgrades: Select individual seals (e.g., sprocket shaft, shifter lever) or packs (5-10 units); upgrade to fuel-resistant kits for comprehensive overhauls. Focus on materials that won't crack or become brittle.
- Brand and Quality: Choose James Gasket for top-quality seals like drive gear or solenoid types, or Cometic for premium Viton/silicone/nitrile options. Prioritize USA-made materials for durability and fuel resistance.
- Installation and Cost: Seals are straightforward replacements for DIY maintenance; prices range from $3.95 for individual seals to $35.95 for kits—factor in pack sizes (e.g., 5-10) and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models and engines do these seals and O-rings support? Parts support Big Twin, Evo, Twin Cam, and models like FL/FLH, XL, Softail—use the year/make/model filter for compatibility, including specific applications like oil pump or fork seals.
- How do Viton seals improve performance? Viton offers high-temp and oil resistance, preventing leaks in critical areas like sprocket shafts or pushrod covers for reliable engine operation.
- What materials are used in seals and O-rings? Common materials include Viton (for oil/cranks), Nitrile Rubber (neutral switch), Silicone (rocker breather), ensuring fuel resistance without cracking.
- Are these sold in packs or individually? Many are in packs (5-10 units) for convenience in rebuilds; some like fork seal kits include everything needed for installation.
- What if a part doesn't fit my Harley? Verify application (e.g., shifter shaft, fuel filter) and year before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related engine parts? Yes—explore gaskets, pistons, or full rebuild kits in the Harley engine category to complement your seals and O-rings for a complete overhaul.
