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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On Sale
COMETIC Pushtube O-Ring - XL C9956
COMETIC
Now: $45.63Was: $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...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
Now: $45.63Was: $50.70Qty in Cart: 0Quantity:Price:Now: $45.63Was: $50.70Subtotal: -
On Sale
COMETIC Shifter Shaft O-Ring C9252
COMETIC
Now: $8.37Was: $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...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
Now: $8.37Was: $9.30Qty in Cart: 0Quantity:Price:Now: $8.37Was: $9.30Subtotal: -
On Sale
COMETIC Inner Primary O-Ring C9536
COMETIC
Now: $47.07Was: $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,...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
Now: $47.07Was: $52.30 -
On Sale
COMETIC Clutch Cover O-Ring C9220
COMETIC
Now: $25.38Was: $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...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
Now: $25.38Was: $28.20Qty in Cart: 0Quantity:Price:Now: $25.38Was: $28.20Subtotal: -
On Sale
COMETIC Carb to Manifold Seal - 50MM C9227
COMETIC
MSRP: $7.95Now: $7.16Was: $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...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
MSRP: $7.95Now: $7.16Was: $7.95Qty in Cart: 0Quantity:Price:MSRP: $7.95Now: $7.16Was: $7.95Subtotal: -
On Sale
COMETIC Main Drive Gear Seal C9258
COMETIC
Now: $6.66Was: $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...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
Now: $6.66Was: $7.40Qty in Cart: 0Quantity:Price:Now: $6.66Was: $7.40Subtotal: -
On Sale
COMETIC Starter Shaft Seal C9528
COMETIC
Now: $7.56Was: $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...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
Now: $7.56Was: $8.40 -
On Sale
COMETIC Main Drive Gear Seal C9527
COMETIC
MSRP: $11.95Now: $10.76Was: $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...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
MSRP: $11.95Now: $10.76Was: $11.95 -
On Sale
COMETIC Intake Manifold O-Ring Set C9453-KIT
COMETIC
MSRP: $5.95Now: $5.36Was: $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...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
MSRP: $5.95Now: $5.36Was: $5.95Qty in Cart: 0Quantity:Price:MSRP: $5.95Now: $5.36Was: $5.95Subtotal: -
On Sale
COMETIC Manifold Gaskets C9608-2
COMETIC
MSRP: $6.95Now: $6.26Was: $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...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
MSRP: $6.95Now: $6.26Was: $6.95Qty in Cart: 0Quantity:Price:MSRP: $6.95Now: $6.26Was: $6.95Subtotal: -
On Sale
COMETIC Starter Bolt O-Ring - Big Twin C9436
COMETIC
Now: $4.77Was: $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...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
Now: $4.77Was: $5.30 -
On Sale
COMETIC Trans Mainshaft Seal - 5 Pack C9356
COMETIC
Now: $7.38Was: $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...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
Now: $7.38Was: $8.20Qty in Cart: 0Quantity:Price:Now: $7.38Was: $8.20Subtotal: -
On Sale
Jims Cam Cover Large O-Ring 2171 for Harley-Davidson FLHTCI Electra Glide Classic 1996-1998
JIMS
MSRP: $16.75Now: $15.08Was: $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...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
MSRP: $16.75Now: $15.08Was: $16.75 -
On Sale
COMETIC Viton O-Ring C10190
COMETIC
Now: $6.84Was: $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...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
Now: $6.84Was: $7.60Qty in Cart: 0Quantity:Price:Now: $6.84Was: $7.60Subtotal: -
On Sale
COMETIC Viton O-Ring C10189
COMETIC
Now: $6.84Was: $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,...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
Now: $6.84Was: $7.60 -
On Sale
COMETIC Drain Plug Washer C9403
COMETIC
Now: $8.55Was: $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...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'
Now: $8.55Was: $9.50 -
On Sale
COMETIC Dipstick Cover O-Ring C9485
COMETIC
Now: $4.77Was: $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...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
Now: $4.77Was: $5.30 -
On Sale
COMETIC Mainshaft Seal - Big Twin C9513
COMETIC
Now: $18.99Was: $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,...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
Now: $18.99Was: $21.10 -
On Sale
COMETIC Internal Manifold Seal C9290
COMETIC
Now: $14.22Was: $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...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
Now: $14.22Was: $15.80Qty in Cart: 0Quantity:Price:Now: $14.22Was: $15.80Subtotal: -
On Sale
COMETIC Starter to Primary Case O-Ring Pack C9201
COMETIC
Now: $10.17Was: $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...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
Now: $10.17Was: $11.30Qty in Cart: 0Quantity:Price:Now: $10.17Was: $11.30Subtotal:
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.
