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
-
On Sale
COMETIC Line Sleeve Oil Seal C9365
COMETIC
Now: $6.48Was: $7.20Oil seals are critical barriers that prevent fluid loss and contamination in high-performance engines—a single failure can compromise your entire drivetrain. The COMETIC Line Sleeve Oil Seal C9365 is...09350828- SKU:
- 09350828
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- APPLICATION:
- OIL LINE
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
Now: $6.48Was: $7.20 -
On Sale
COMETIC Clutch Gear Seal C9368-1
COMETIC
MSRP: $5.95Now: $5.36Was: $5.95Clutch gear seals are a critical point of failure in high-performance engines—improper sealing leads to fluid weepage, contamination, and premature clutch wear. The COMETIC C9368-1 is engineered to...09350831- SKU:
- 09350831
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- APPLICATION:
- CLUTCH GEAR
- MATERIAL:
- VITON
MSRP: $5.95Now: $5.36Was: $5.95 -
On Sale
COMETIC Clutch Hub Seal C9371-1
COMETIC
MSRP: $6.95Now: $6.26Was: $6.95Clutch hub seals are critical to maintaining hydraulic integrity in your clutch system—a failure here means fluid loss, air intrusion, and immediate loss of clutch actuation. The COMETIC C9371-1...09350834- SKU:
- 09350834
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CLUTCH HUB
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- INSIDE DIAMETER METRIC:
- 33 MM
- RIDING STYLE:
- STREET
- MATERIAL:
- VITON
- OUTSIDE DIAMETER METRIC:
- 47 MM
- THICKNESS METRIC:
- 7 MM
MSRP: $6.95Now: $6.26Was: $6.95 -
On Sale
COMETIC Engine Crankcase Seal C9682
COMETIC
Now: $44.28Was: $49.20Engine crankcase seals are critical to preventing oil seepage that compromises performance and creates maintenance headaches. The COMETIC C9682 delivers reliable, long-term sealing without...09350374- SKU:
- 09350374
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- CRANKCASE
- MATERIAL:
- VITON
- UNITS:
- 10 PACK
- PRODUCT NAME:
- SEAL
Now: $44.28Was: $49.20Qty in Cart: 0Quantity:Price:Now: $44.28Was: $49.20Subtotal: -
On Sale
COMETIC Trans Shifter Drum Seal C9354F5
COMETIC
Now: $8.82Was: $9.80Transmission seal integrity is critical for maintaining proper fluid pressure and preventing costly leaks that compromise performance and reliability. The COMETIC Trans Shifter Drum Seal C9354F5 is...09350376- SKU:
- 09350376
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- 5 PACK
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- APPLICATION:
- SHIFTER SHAFT
- APPLICATION:
- TRANSMISSION
Now: $8.82Was: $9.80 -
On Sale
COMETIC Interconnect Seal C9004
COMETIC
Now: $16.20Was: $18.00Engine block sealing requires precision and reliability—a single leak compromises combustion efficiency and creates cascading failures downstream. The COMETIC Interconnect Seal C9004 delivers the...09350377- SKU:
- 09350377
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- INTERCONNECT
- MATERIAL:
- VITON
Now: $16.20Was: $18.00 -
On Sale
COMETIC O-Ring & Valve O-Ring - Twin Cam C9586
COMETIC
MSRP: $6.95Now: $6.26Was: $6.95Proper sealing is critical to engine reliability, and a compromised O-ring can lead to fluid leaks and performance loss. The COMETIC C9586 delivers consistent, dependable sealing across...09350139- SKU:
- 09350139
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- PUSHROD COVER
- APPLICATION:
- PUSHROD TUBE
- MATERIAL:
- VITON
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL
MSRP: $6.95Now: $6.26Was: $6.95Qty in Cart: 0Quantity:Price:MSRP: $6.95Now: $6.26Was: $6.95Subtotal: -
On Sale
COMETIC Rocker Box Washer C9400
COMETIC
Now: $4.77Was: $5.30Rocker box gasket sealing surfaces demand precision engineering to prevent oil weeping and maintain crankcase pressure integrity. The COMETIC Rocker Box Washer C9400 delivers the fuel-resistant...09350168- SKU:
- 09350168
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- APPLICATION:
- ROCKER COVER
- MATERIAL:
- COPPER
- PRODUCT NAME:
- WASHER
Now: $4.77Was: $5.30 -
On Sale
COMETIC Paper Rocker Box Washer C9286
COMETIC
Now: $4.23Was: $4.70Rocker box washers endure constant thermal cycling and fuel exposure in high-performance engines—standard materials simply don't cut it. The COMETIC C9286 is engineered from premium, fuel-resistant...09350169- SKU:
- 09350169
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- ROCKER COVER
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- WASHER
Now: $4.23Was: $4.70 -
On Sale
COMETIC Oil Pump Cover O-Ring C9440
COMETIC
MSRP: $6.25Now: $5.63Was: $6.25Oil pump cover o-rings are critical sealing components that prevent pressurized oil leakage and maintain system integrity under sustained engine operation. A compromised o-ring leads to oil loss,...09350174- SKU:
- 09350174
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- APPLICATION:
- OIL PUMP
- RIDING STYLE:
- STREET
- UNITS:
- 25 PACK
MSRP: $6.25Now: $5.63Was: $6.25Qty in Cart: 0Quantity:Price:MSRP: $6.25Now: $5.63Was: $6.25Subtotal: -
On Sale
COMETIC Oil Pump Drive Gear Seal C9349
COMETIC
Now: $8.55Was: $9.50Your engine's oil pump drive gear seal is a critical component that prevents costly oil leakage and maintains proper lubrication pressure under demanding track or street conditions. A compromised...09350175- SKU:
- 09350175
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- OIL PUMP
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN DRIVE GEAR
- MATERIAL:
- VITON
- UNITS:
- 5 PACK
Now: $8.55Was: $9.50Qty in Cart: 0Quantity:Price:Now: $8.55Was: $9.50Subtotal: -
On Sale
COMETIC Sprocket Shaft Seal C9351
COMETIC
Now: $10.44Was: $11.60A compromised sprocket shaft seal allows critical lubrication to escape and contaminants to infiltrate your engine—accelerating wear on precision components and threatening reliability during...09350176- SKU:
- 09350176
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- UNITS:
- 5 PACK
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- APPLICATION:
- SPROCKET SHAFT
- PRODUCT NAME:
- SEAL
Now: $10.44Was: $11.60Qty in Cart: 0Quantity:Price:Now: $10.44Was: $11.60Subtotal: -
On Sale
COMETIC Upper Pushrod Cover O-Ring Pack C9451
COMETIC
MSRP: $6.25Now: $5.63Was: $6.25Upper pushrod cover leaks are a common source of oil seepage that can compromise engine cleanliness and create maintenance headaches. COMETIC's OEM-replacement O-ring pack eliminates the guesswork by...09350178- SKU:
- 09350178
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- O-RING
- THICKNESS:
- 0,060'
- APPLICATION:
- PUSHROD COVER
- APPLICATION:
- ROCKER COVER
- THICKNESS IMPERIAL:
- 0.060'
- UNITS:
- 10 PACK
MSRP: $6.25Now: $5.63Was: $6.25 -
On Sale
COMETIC Starter Shaft Seal C9491
COMETIC
Now: $8.55Was: $9.50A leaking starter shaft seal compromises engine reliability and can lead to costly oil loss and starter failure. The COMETIC C9491 delivers a precision OEM-quality replacement that restores proper...09350180- SKU:
- 09350180
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- VITON
- APPLICATION:
- STARTER SHAFT
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
Now: $8.55Was: $9.50 -
On Sale
COMETIC Mainshaft O-Ring C9530
COMETIC
Now: $5.76Was: $6.40A failing mainshaft seal will compromise your transmission's integrity and lead to costly internal damage. The COMETIC Mainshaft O-Ring C9530 delivers the fuel-resistant durability and precision fit...09350190- SKU:
- 09350190
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- APPLICATION:
- MAIN DRIVE GEAR
- RIDING STYLE:
- STREET
- UNITS:
- 25 PACK
- APPLICATION:
- TRANSMISSION
Now: $5.76Was: $6.40Qty in Cart: 0Quantity:Price:Now: $5.76Was: $6.40Subtotal: -
On Sale
COMETIC Main Shaft Seal C9262
COMETIC
MSRP: $10.95Now: $9.86Was: $10.95A worn main shaft seal is a silent efficiency killer—allowing fluid seepage that compromises lubrication, increases friction, and can lead to catastrophic engine damage if left unchecked. The COMETIC...09350203- SKU:
- 09350203
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- APPLICATION:
- MAIN DRIVE GEAR
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
MSRP: $10.95Now: $9.86Was: $10.95Qty in Cart: 0Quantity:Price:MSRP: $10.95Now: $9.86Was: $10.95Subtotal: -
On Sale
COMETIC Lower Tappet Block O-Ring C9444
COMETIC
Now: $7.56Was: $8.40The lower tappet block o-ring is a critical seal in your engine's valve train system—one that directly impacts oil pressure consistency and prevents costly leaks that compromise performance...09350227- SKU:
- 09350227
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- LOWER TAPPET BLOCK
- RIDING STYLE:
- STREET
- MATERIAL:
- NITRILE
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
Now: $7.56Was: $8.40Qty in Cart: 0Quantity:Price:Now: $7.56Was: $8.40Subtotal: -
On Sale
COMETIC Clutch Inspection Cover O-Ring C9434
COMETIC
Now: $5.76Was: $6.40A failing clutch inspection cover o-ring can compromise your engine's sealing integrity, leading to oil seepage and potential contamination of critical clutch components. This COMETIC replacement...09350231- SKU:
- 09350231
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- BUNA
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
- APPLICATION:
- CLUTCH INSPECTION COVER
- RIDING STYLE:
- STREET
Now: $5.76Was: $6.40Qty in Cart: 0Quantity:Price:Now: $5.76Was: $6.40Subtotal: -
On Sale
COMETIC Starter Seal - Twin Cam C9201F1
COMETIC
MSRP: $4.95Now: $4.46Was: $4.95Starter seal failures lead to oil leaks, reduced engine efficiency, and costly repairs down the line. The COMETIC Starter Seal for Twin Cam engines delivers long-term reliability with a...09350849- SKU:
- 09350849
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- STARTER
- UNITS:
- EACH
- MATERIAL:
- BUNA RUBBER
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
MSRP: $4.95Now: $4.46Was: $4.95Qty in Cart: 0Quantity:Price:MSRP: $4.95Now: $4.46Was: $4.95Subtotal: -
On Sale
COMETIC Seal C10213
COMETIC
Now: $12.51Was: $13.90Engine seal integrity directly impacts compression, fuel efficiency, and longevity. The COMETIC Seal C10213 is engineered with premium fuel-resistant materials that resist creep, cracking, and...09351001- SKU:
- 09351001
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SEAL
- APPLICATION:
- SHIFTER SHAFT
Now: $12.51Was: $13.90Qty in Cart: 0Quantity:Price:Now: $12.51Was: $13.90Subtotal:
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.
