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 Filler Plug O-Ring C9263
COMETIC
MSRP: $4.15Now: $4.00Was: $4.20A leaking filler plug can compromise your entire cooling system's integrity and lead to catastrophic engine damage. The COMETIC Filler Plug O-Ring C9263 delivers a reliable, OEM-quality seal that prevents coolant loss and maintains system pressure where...09350191- SKU:
- 09350191
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- APPLICATION:
- FILLER PLUG
MSRP: $4.15Now: $4.00Was: $4.20 -
On Sale
COMETIC Clutch Cable O-Ring C9447
COMETIC
Now: $3.00Was: $3.20A worn or degraded clutch cable O-ring compromises shift precision and can lead to cable binding or premature failure—especially under sustained track conditions. The COMETIC C9447 replaces that critical seal with a precision-engineered O-ring...09350192- SKU:
- 09350192
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- VITON
- APPLICATION:
- CLUTCH CABLE
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- UNITS:
- 25 PACK
Now: $3.00Was: $3.20 -
On Sale
COMETIC Tappet Screw O-Ring C9448
COMETIC
MSRP: $4.15Now: $4.00Was: $4.20Valve cover gasket leaks are a common culprit behind oil seepage and engine bay mess. The COMETIC Tappet Screw O-Ring (C9448) provides a precision seal at the critical junction where fasteners pass through your gasket, eliminating the small leaks that...09350225- SKU:
- 09350225
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- APPLICATION:
- TAPPET GUIDE
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
MSRP: $4.15Now: $4.00Was: $4.20 -
On Sale
COMETIC Upper Tappet Block O-Ring C9443
COMETIC
Now: $8.00Was: $8.40The upper tappet block o-ring is a critical seal in your engine's valve train system—when it fails, oil leakage and compromised cylinder head pressure follow immediately. Cometic's C9443 is engineered from premium fuel-resistant elastomers that maintain...09350226- SKU:
- 09350226
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- VITON
- APPLICATION:
- UPPER TAPPET BLOCK
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
Now: $8.00Was: $8.40 -
On Sale
COMETIC Lower Pushrod O-Ring C9295
COMETIC
Now: $13.00Was: $14.10Pushrod sealing integrity is critical to maintaining proper oil pressure and preventing catastrophic engine leakage. The COMETIC Lower Pushrod O-Ring C9295 delivers the precision engineering and material science your engine demands, whether you're...09350228- SKU:
- 09350228
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- NITRILE RUBBER
- UNITS:
- 10 PACK
- APPLICATION:
- PUSHROD COVER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
Now: $13.00Was: $14.10Qty in Cart: 0Quantity:Price:Now: $13.00Was: $14.10Subtotal: -
COMETIC Tappet Pin Cover O-Ring C9296
COMETIC
$4.00A failing tappet pin cover O-ring will compromise your engine's seal integrity and lead to oil leakage that degrades performance and creates messy maintenance headaches. The COMETIC C9296 delivers the reliability you need with a precision-engineered seal...09350229- SKU:
- 09350229
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- TAPPET COVER
- MATERIAL:
- NITRILE
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
$4.00 -
On Sale
COMETIC Point Cover Seal C9355
COMETIC
Now: $8.00Was: $8.20A failing point cover seal leads to oil leaks, contamination of ignition components, and potential engine damage—problems that compound quickly on the track or in the shop. The COMETIC C9355 eliminates these risks with a precision-engineered seal that...09350230- SKU:
- 09350230
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- UNITS:
- 5 PACK
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- APPLICATION:
- CAM COVER
- PRODUCT NAME:
- SEAL
Now: $8.00Was: $8.20 -
On Sale
COMETIC Inspection Cover O-Ring C9439
COMETIC
Now: $6.00Was: $6.40Inspection cover o-rings are critical sealing components that prevent oil leakage and contamination in high-performance engines. The COMETIC C9439 is engineered with fuel-resistant materials that maintain their integrity under extreme temperatures and...09350232- SKU:
- 09350232
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- APPLICATION:
- CHAIN INSPECTION COVER
- UNITS:
- 10 PACK
- MATERIAL:
- NITRILE RUBBER
Now: $6.00Was: $6.40Qty in Cart: 0Quantity:Price:Now: $6.00Was: $6.40Subtotal: -
On Sale
COMETIC Motor Sprocket Seal C9353
COMETIC
Now: $16.00Was: $17.20A failing sprocket seal allows oil to migrate past your crankshaft, leading to contamination, reduced bearing protection, and potential catastrophic engine failure. The COMETIC Motor Sprocket Seal C9353 is a precision-engineered replacement that restores...09350234- SKU:
- 09350234
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- VITON
- PRODUCT NAME:
- SEAL
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- 5 PACK
Now: $16.00Was: $17.20Qty in Cart: 0Quantity:Price:Now: $16.00Was: $17.20Subtotal: -
On Sale
COMETIC Coolant Tube O-Ring Set C10139
COMETIC
MSRP: $31.45Now: $30.00Was: $31.45Proper O-ring seals are critical to preventing coolant leaks and maintaining system integrity during cylinder head service. The COMETIC C10139 O-ring set eliminates guesswork by providing all necessary seals and washers in one package, ensuring a...09344838- SKU:
- 09344838
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- O-RING
- UNITS:
- KIT
- APPLICATION:
- COOLANT TUBE
- RIDING STYLE:
- STREET
MSRP: $31.45Now: $30.00Was: $31.45Qty in Cart: 0Quantity:Price:MSRP: $31.45Now: $30.00Was: $31.45Subtotal: -
On Sale
COMETIC O-Ring C9445
COMETIC
Now: $5.00Was: $5.30Proper sealing is non-negotiable in high-performance engine builds, and the COMETIC O-Ring C9445 delivers the reliability you need to prevent costly leaks and maintain consistent compression. Whether you're assembling a precision stroker or refreshing a...09344703- SKU:
- 09344703
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- OIL PUMP
- MATERIAL:
- NITRILE RUBBER
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
Now: $5.00Was: $5.30 -
COMETIC Valve Stem Seal - .625" C9998-1
COMETIC
$5.00Valve stem seals are critical to preventing oil from seeping into your combustion chamber—a problem that degrades performance, increases emissions, and accelerates engine wear. The COMETIC C9998-1 delivers the reliability you need for sustained high-RPM...09344726- SKU:
- 09344726
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- MATERIAL:
- VITON
- TYPE:
- VALVE STEM
- UNITS:
- EACH
$5.00 -
On Sale
COMETIC Shift Sleeve O-Ring C9484
COMETIC
Now: $9.00Was: $9.50Shift sleeve o-rings endure extreme heat, pressure, and fuel exposure during performance driving—and failure means transmission fluid leakage, loss of shift precision, and costly downtime. The COMETIC C9484 is engineered with fuel-resistant elastomer...09341372- SKU:
- 09341372
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- UNITS:
- 25 PACK
- PRODUCT NAME:
- O-RING
- APPLICATION:
- SHIFTER LEVER
Now: $9.00Was: $9.50 -
On Sale
COMETIC Double Lip Seal C9350
COMETIC
Now: $14.00Was: $14.80A quality crankshaft seal is the difference between a clean engine bay and catastrophic oil leakage under sustained load. The COMETIC Double Lip Seal C9350 delivers the reliability you need for high-performance applications, engineered with premium...09350171- SKU:
- 09350171
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- VITON
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- CAM COVER
- PRODUCT NAME:
- SEAL
Now: $14.00Was: $14.80Qty in Cart: 0Quantity:Price:Now: $14.00Was: $14.80Subtotal: -
On Sale
COMETIC O-Ring C10201
COMETIC
Now: $11.00Was: $11.90Proper sealing is non-negotiable in high-performance engine builds, and a compromised O-ring can lead to costly leaks and catastrophic failures. The COMETIC C10201 delivers reliable, precision sealing for critical engine applications where margin for...09350990- SKU:
- 09350990
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- O-RING
- APPLICATION:
- CYLINDER
- RIDING STYLE:
- ATV
- UNITS:
- 10 PACK
Now: $11.00Was: $11.90Qty in Cart: 0Quantity:Price:Now: $11.00Was: $11.90Subtotal: -
On Sale
COMETIC Primary Seal Kit C10248
COMETIC
MSRP: $86.05Now: $81.00Was: $86.05A primary seal kit is the foundation of a leak-free, reliable engine—and Cometic's AFM gasket material sets the standard for high-performance applications. Whether you're running a street engine or a race-prepped mill, this kit delivers the durability...09351031- SKU:
- 09351031
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- SEAL
- UNITS:
- KIT
- TYPE:
- PRIMARY
MSRP: $86.05Now: $81.00Was: $86.05Qty in Cart: 0Quantity:Price:MSRP: $86.05Now: $81.00Was: $86.05Subtotal: -
On Sale
COMETIC Dip Stick O-Ring - Sportster C9961
COMETIC
Now: $3.00Was: $3.20Oil level monitoring depends on a reliable seal, and a degraded dip stick O-ring compromises both accuracy and engine cleanliness. COMETIC's fuel-resistant O-ring maintains its integrity under thermal cycling and chemical exposure, eliminating creep,...09340740- SKU:
- 09340740
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- DIPSTICK
- MATERIAL:
- BUNA
- PRODUCT NAME:
- O-RING
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
Now: $3.00Was: $3.20Qty in Cart: 0Quantity:Price:Now: $3.00Was: $3.20Subtotal: -
On Sale
COMETIC Lower Pushrod Tube Seal C9461
COMETIC
Now: $7.00Was: $7.40Pushrod tube seals are critical to preventing oil leakage and maintaining proper lubrication in high-performance engines—failure here can lead to catastrophic damage under racing conditions. The COMETIC C9461 Lower Pushrod Tube Seal delivers the...09350259- SKU:
- 09350259
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- PUSHROD COVER
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- X-RING
- RIDING STYLE:
- STREET
- TYPE:
- QUAD SEAL
- UNITS:
- 10 PACK
Now: $7.00Was: $7.40 -
COMETIC Oil Pump Cover O-Ring C9684
COMETIC
$4.00Oil pump cover o-rings fail silently, leading to leaks that compromise lubrication and engine reliability. This COMETIC seal restores the critical barrier between your oil pump and engine block, preventing costly internal damage. Built with...09350260- SKU:
- 09350260
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- OIL PUMP
- UNITS:
- 10 PACK
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
$4.00Qty in Cart: 0Quantity:Price:$4.00Subtotal: -
On Sale
COMETIC Inner Primary Bearing Seal C9518
COMETIC
Now: $11.00Was: $11.60Bearing seal failure leads to oil leakage, contamination, and catastrophic internal engine damage—especially in high-rpm applications where pressure and heat push standard seals beyond their limits. The COMETIC C9518 Inner Primary Bearing Seal is...09350262- SKU:
- 09350262
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- APPLICATION:
- INNER PRIMARY
- MATERIAL:
- VITON
- UNITS:
- 5 PACK
Now: $11.00Was: $11.60Qty in Cart: 0Quantity:Price:Now: $11.00Was: $11.60Subtotal:
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.
