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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COMETIC Pushtube O-Ring - XL C9956
COMETIC
$50.70Pushrod sealing integrity is critical to engine performance and longevity—even microscopic leaks compromise compression and increase blowby. The COMETIC Pushtube O-Ring XL C9956 delivers the precision fit and material science required for race-grade...09340741- SKU:
- 09340741
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MATERIAL:
- NITRILE RUBBER
- APPLICATION:
- PUSHROD TUBE
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- UNITS:
- 25 PACK
$50.70Qty in Cart: 0Quantity:Price:$50.70Subtotal: -
COMETIC Shifter Shaft O-Ring C9252
COMETIC
$9.30A failing shifter shaft o-ring compromises your transmission's seal integrity, leading to fluid leaks and potential internal damage. The COMETIC C9252 delivers the reliability you need for consistent shifts and long-term protection, whether you're on the...09350278- SKU:
- 09350278
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- APPLICATION:
- STARTER SHAFT
- MATERIAL:
- BUNA
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$9.30Qty in Cart: 0Quantity:Price:$9.30Subtotal: -
COMETIC Inner Primary O-Ring C9536
COMETIC
$52.30The COMETIC Inner Primary O-Ring C9536 is a critical wear component that prevents fuel and oil seepage in high-performance engine assemblies. Using a premium, fuel-resistant elastomer formulation, this o-ring maintains its seal integrity across extreme...09350261- SKU:
- 09350261
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- INNER PRIMARY
- MATERIAL:
- VITON
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- MOTOR
- PRODUCT NAME:
- O-RING
$52.30 -
COMETIC Clutch Cover O-Ring C9220
COMETIC
$28.20A leaking clutch cover gasket compromises engine sealing and invites contamination into critical drivetrain components. The COMETIC Clutch Cover O-Ring C9220 delivers reliable, long-lasting sealing performance that keeps oil where it belongs—inside your...09350263- SKU:
- 09350263
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CLUTCH COVER
- UNITS:
- 5 PACK
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
$28.20 -
COMETIC Carb to Manifold Seal - 50MM C9227
COMETIC
$7.95A leaking carb-to-manifold seal doesn't just waste fuel—it creates vacuum leaks that compromise idle quality, drivability, and fuel economy. The COMETIC C9227 eliminates guesswork with a precision 50MM seal engineered to maintain a reliable, long-term...09350267- SKU:
- 09350267
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- UNITS:
- EACH
- MATERIAL:
- VITON
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
$7.95Qty in Cart: 0Quantity:Price:$7.95Subtotal: -
COMETIC Main Drive Gear Seal C9258
COMETIC
$7.40A leaking main drive gear seal can compromise your entire drivetrain, allowing fluid loss that leads to inadequate lubrication and catastrophic gear failure. The COMETIC C9258 is a precision-engineered replacement seal that restores proper fluid...09350198- SKU:
- 09350198
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- 5 PACK
- APPLICATION:
- MAIN DRIVE GEAR
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
$7.40 -
COMETIC Starter Shaft Seal C9528
COMETIC
$8.40A leaking starter shaft seal can silently drain your engine's oil while compromising starter reliability—a critical failure point in high-performance builds. The COMETIC C9528 delivers OEM-quality sealing with the precision manufacturing you expect from...09350199- SKU:
- 09350199
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- STARTER SHAFT
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SEAL
- MATERIAL:
- DUAL LIP VITON
- RIDING STYLE:
- STREET
$8.40 -
COMETIC Main Drive Gear Seal C9527
COMETIC
$11.95A compromised main drive gear seal leads to fluid leakage, contamination, and accelerated wear on critical drivetrain components. The COMETIC C9527 is engineered to maintain a reliable, long-lasting seal under demanding racing and high-performance...09350200- SKU:
- 09350200
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- APPLICATION:
- MAIN DRIVE GEAR
- STYLE:
- DOUBLE LIP
- MATERIAL:
- VITON
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
$11.95 -
COMETIC Intake Manifold O-Ring Set C9453-KIT
COMETIC
$5.95Intake manifold leaks compromise combustion efficiency and can lead to vacuum leaks that throw off your fuel mixture and ignition timing. COMETIC's O-ring set eliminates the guesswork by providing factory-spec seals engineered to withstand sustained...09344705- SKU:
- 09344705
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- INTAKE MANIFOLD
- APPLICATION:
- CYLINDER
- RIDING STYLE:
- STREET
- UNITS:
- SET
- PRODUCT NAME:
- O-RING
$5.95 -
COMETIC Manifold Gaskets C9608-2
COMETIC
$6.95A quality manifold gasket is critical to preventing exhaust leaks that rob power and create unwanted noise. COMETIC's precision-engineered gasket ensures a reliable seal under high heat and pressure cycles, maintaining optimal engine efficiency and...09344717- SKU:
- 09344717
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CYLINDER HEAD
- APPLICATION:
- INTAKE MANIFOLD
- MATERIAL:
- NITRILE RUBBER
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
$6.95Qty in Cart: 0Quantity:Price:$6.95Subtotal: -
COMETIC Starter Bolt O-Ring - Big Twin C9436
COMETIC
$5.30Starter bolt seal failures are a common source of oil leaks on Big Twin engines, often going unnoticed until oil pooling becomes a real problem. This COMETIC O-ring provides a precision seal at the starter motor mounting point, eliminating weeping and...09341367- SKU:
- 09341367
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- STARTER
- PRODUCT NAME:
- O-RING
- MATERIAL:
- NITRILE RUBBER
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
$5.30 -
COMETIC Trans Mainshaft Seal - 5 Pack C9356
COMETIC
$8.20Transmission fluid leaks are costly problems that compromise performance and reliability. The COMETIC Trans Mainshaft Seal C9356 replaces worn OEM seals with precision-engineered components that restore a tight seal and prevent fluid loss. This 5-pack...09341404- SKU:
- 09341404
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- APPLICATION:
- TRANSMISSION
- UNITS:
- 5 PACK
- APPLICATION:
- MAIN DRIVE GEAR
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
$8.20 -
Jims Cam Cover Large O-Ring 2171 for Harley-Davidson FLHTCI Electra Glide Classic 1996-1998
JIMS
$16.75A worn or deteriorating cam cover o-ring is a common source of oil seepage in classic Harley-Davidson engines—one that compounds over time and compromises engine cleanliness. The JIMS Cam Cover Large O-Ring 2171 delivers a precision-engineered seal that...DS376546- SKU:
- DS376546
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- RUBBER
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- SIZE:
- LARGE
- TYPE:
- TWIN CAM
$16.75 -
COMETIC Viton O-Ring C10190
COMETIC
$7.60Engine seals are only as reliable as their materials—and Viton O-rings set the gold standard for high-temperature, high-pressure applications. If you're building a forced-induction engine, running aggressive boost levels, or assembling a high-performance...09350976- SKU:
- 09350976
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- APPLICATION:
- MAP SENSOR
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$7.60 -
COMETIC Viton O-Ring C10189
COMETIC
$7.60Fuel system sealing demands uncompromising reliability, and a failed O-ring can compromise your entire fuel delivery system. The COMETIC Viton O-Ring C10189 resists fuel degradation, thermal cycling, and pressure fluctuations without creeping or...09350975- SKU:
- 09350975
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- APPLICATION:
- BREATHER
- PRODUCT NAME:
- O-RING
- MATERIAL:
- VITON
$7.60 -
COMETIC Drain Plug Washer C9403
COMETIC
$9.50A worn or damaged drain plug washer is an easy way to develop slow oil leaks that compromise engine cleanliness and waste oil over time. The COMETIC C9403 drain plug washer eliminates sealing failures with premium fuel-resistant material that maintains...09350216- SKU:
- 09350216
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- FIBER
- MATERIAL:
- VULCANIZED
- THICKNESS IMPERIAL:
- 0.015'
- UNITS:
- 10 PACK
- APPLICATION:
- DRAIN PLUG
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,015'
$9.50 -
COMETIC Dipstick Cover O-Ring C9485
COMETIC
$5.30A degraded dipstick cover o-ring compromises your engine's sealing integrity, allowing contaminants and moisture to infiltrate your oil pan. COMETIC's C9485 replaces worn or damaged o-rings with a precision-engineered seal that maintains consistent...09350214- SKU:
- 09350214
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- DIPSTICK COVER
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
$5.30 -
COMETIC Mainshaft Seal - Big Twin C9513
COMETIC
$21.10A leaking mainshaft seal compromises engine integrity and leads to costly fluid loss and potential drivetrain damage. The COMETIC Mainshaft Seal for Big Twin applications delivers a precise, factory-engineered fit that stops leaks before they start,...09350212- SKU:
- 09350212
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- MATERIAL:
- VITON
- UNITS:
- 5 PACK
$21.10 -
COMETIC Internal Manifold Seal C9290
COMETIC
$15.80Cometic's internal manifold seal eliminates unwanted air leakage at the intake manifold interface, ensuring accurate fuel metering and consistent combustion chamber conditions. A properly sealed manifold is critical for maintaining peak boost levels in...09350156- SKU:
- 09350156
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- MATERIAL:
- NITRILE RUBBER
- RIDING STYLE:
- STREET
$15.80 -
COMETIC Starter to Primary Case O-Ring Pack C9201
COMETIC
$11.30A failed starter-to-primary case seal is one of the easiest ways to turn a reliable engine into an oil-weeping liability. COMETIC's O-ring pack replaces worn or degraded seals that compromise crankcase integrity, preventing costly oil leaks and engine...09350155- SKU:
- 09350155
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- STARTER
- RIDING STYLE:
- STREET
- MATERIAL:
- NITRILE RUBBER
- PRODUCT NAME:
- O-RING
- UNITS:
- 5 PACK
$11.30
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.
