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 Valve Stem Seal C9424-1
COMETIC
$5.00High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350835- SKU:
- 09350835
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- MATERIAL:
- VITON
- OUTSIDE DIAMETER IMPERIAL:
- 0.625'
- TYPE:
- VALVE STEM
- RIDING STYLE:
- STREET
$5.00 -
On Sale
COMETIC Carb Backplate O-Ring C9686
COMETIC
MSRP: $6.25Now: $6.00Was: $6.25Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350373- SKU:
- 09350373
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- CARBURETOR BACKING PLATE
- RIDING STYLE:
- STREET
- MATERIAL:
- NITRILE
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
MSRP: $6.25Now: $6.00Was: $6.25 -
On Sale
COMETIC Valve Stem Seal C9153
COMETIC
Now: $71.00Was: $76.00High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle09350137- SKU:
- 09350137
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- STREET
- TYPE:
- VALVE STEM
- MATERIAL:
- VITON
- UNITS:
- 25 PACK
- PRODUCT NAME:
- SEAL
Now: $71.00Was: $76.00 -
On Sale
COMETIC Valve Stem Seal - Viton C9166
COMETIC
Now: $23.00Was: $24.20High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle09350138- SKU:
- 09350138
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- TYPE:
- VALVE STEM
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
Now: $23.00Was: $24.20 -
On Sale
COMETIC Oil Pump Inner Small O-Ring C9449
COMETIC
Now: $7.00Was: $7.40High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350159- SKU:
- 09350159
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- APPLICATION:
- OIL PUMP
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
Now: $7.00Was: $7.40Qty in Cart: 0Quantity:Price:Now: $7.00Was: $7.40Subtotal: -
On Sale
COMETIC Derby Cover O-Ring - Big Twin C9662
COMETIC
Now: $14.00Was: $15.40High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350160- SKU:
- 09350160
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- DERBY COVER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- UNITS:
- 5 PACK
- MATERIAL:
- NITRILE RUBBER
Now: $14.00Was: $15.40Qty in Cart: 0Quantity:Price:Now: $14.00Was: $15.40Subtotal: -
On Sale
COMETIC Cam Support O-Ring C9631
COMETIC
Now: $3.00Was: $3.20Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350165- SKU:
- 09350165
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CAM SUPPORT
- UNITS:
- 10 PACK
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
Now: $3.00Was: $3.20 -
On Sale
COMETIC EFI Map Senser Seal - Twin Cam C9630
COMETIC
Now: $12.00Was: $12.70High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350166- SKU:
- 09350166
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CAM MANIFOLD
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MATERIAL:
- SILICONE
Now: $12.00Was: $12.70 -
On Sale
COMETIC Umbrella Seal C9481
COMETIC
Now: $8.00Was: $8.40High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350167- SKU:
- 09350167
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- MATERIAL:
- VITON
- APPLICATION:
- UMBRELLA VALVE
Now: $8.00Was: $8.40 -
On Sale
COMETIC O-Ring C9459
COMETIC
Now: $3.00Was: $3.20Made in the U.S.A.09350170- SKU:
- 09350170
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- DIPSTICK COVER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- UNITS:
- 25 PACK
- APPLICATION:
- PUSHROD COVER
- MATERIAL:
- NITRILE RUBBER
Now: $3.00Was: $3.20 -
On Sale
COMETIC Intake Manifold Seal Kit - Evolution C9131
COMETIC
MSRP: $14.95Now: $14.00Was: $14.95Kit contains one carburetor to intake seal (27002-89) and two intake to cylinder head seals (26995-86B), Made in the U.S.A.09350172- SKU:
- 09350172
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- SEAL
MSRP: $14.95Now: $14.00Was: $14.95 -
On Sale
COMETIC Carb/Manifold Sealing Ring C9088
COMETIC
MSRP: $10.95Now: $10.00Was: $10.95High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350173- SKU:
- 09350173
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- FIBER
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- THICKNESS IMPERIAL:
- 0.031'
- UNITS:
- EACH
MSRP: $10.95Now: $10.00Was: $10.95 -
On Sale
COMETIC Derby Cover Bolt Washer C9363
COMETIC
MSRP: $5.20Now: $5.00Was: $5.20High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350177- SKU:
- 09350177
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- WASHER
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- DERBY COVER
MSRP: $5.20Now: $5.00Was: $5.20 -
On Sale
COMETIC Starter Housing O-Ring Pack C9433
COMETIC
Now: $5.00Was: $5.30COMETIC Starter Housing O-Ring Pack09350179- SKU:
- 09350179
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- O-RING
- UNITS:
- 25 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- STARTER HOUSING
- MATERIAL:
- NITRILE RUBBER
Now: $5.00Was: $5.30 -
On Sale
COMETIC Starter Shaft Seal C9379
COMETIC
Now: $14.00Was: $14.80Made in the U.S.A.09350181- SKU:
- 09350181
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- STARTER SHAFT
- UNITS:
- 5 PACK
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
Now: $14.00Was: $14.80 -
On Sale
COMETIC Starter Shaft Seal C9509
COMETIC
Now: $16.00Was: $16.90Made in the U.S.A.09350182- SKU:
- 09350182
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- APPLICATION:
- STARTER SHAFT
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SEAL
- MATERIAL:
- DUAL LIP VITON
- RIDING STYLE:
- STREET
Now: $16.00Was: $16.90 -
On Sale
COMETIC Drain Plug Washer C9498
COMETIC
Now: $6.00Was: $6.70High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350185- SKU:
- 09350185
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- NYLON
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,063'
- THICKNESS IMPERIAL:
- 0.063'
- UNITS:
- 10 PACK
- APPLICATION:
- DRAIN PLUG
- PRODUCT NAME:
- WASHER
Now: $6.00Was: $6.70 -
On Sale
COMETIC Counter Shaft O-Ring C9529
COMETIC
Now: $6.00Was: $6.40High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350187- SKU:
- 09350187
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- APPLICATION:
- COUNTERSHAFT
- MATERIAL:
- BUNA RUBBER
Now: $6.00Was: $6.40 -
On Sale
COMETIC Right Mainshaft O-Ring C9495
COMETIC
Now: $5.00Was: $5.30High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350188- SKU:
- 09350188
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- 25 PACK
- APPLICATION:
- MAIN DRIVE GEAR
- RIDING STYLE:
- STREET
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- APPLICATION:
- TRANSMISSION
Now: $5.00Was: $5.30 -
On Sale
COMETIC Mainshaft Quad Seal C9361
COMETIC
Now: $10.00Was: $10.60High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350189- SKU:
- 09350189
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- MAIN DRIVE GEAR
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- APPLICATION:
- TRANSMISSION
Now: $10.00Was: $10.60
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.
