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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JAMES GASKET Pushrod Washer - Big Twin 6737
JAMES GASKET
$10.50Pushrod washers are critical wear components that prevent valve train damage and maintain proper pushrod seating on your Big Twin engine. A worn or missing washer creates excessive play, leading to valvetrain noise, reduced reliability, and potential...09350131- SKU:
- 09350131
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- WASHER
- APPLICATION:
- PUSHROD TUBE
- RIDING STYLE:
- STREET
- UNITS:
- 20 PACK
$10.50 -
JAMES GASKET Drain Plug O-Ring 11105-100
JAMES GASKET
$27.10A failing drain plug o-ring is an easy way to develop an oil leak that'll cost you far more in engine damage than the part itself. JAMES GASKET's OEM-quality o-ring ensures a reliable seal every time you service your Harley, eliminating weeping and...09351048- SKU:
- 09351048
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- UNITS:
- 100 PACK
- APPLICATION:
- DRAIN PLUG
$27.10 -
JAMES GASKET Coolant Manifold O-Ring JGI-11900090
JAMES GASKET
$8.50A leaking coolant manifold can compromise your engine's thermal management and lead to costly overheating issues mid-race or on the street. The JAMES GASKET Coolant Manifold O-Ring is engineered to create a reliable, leak-free seal at critical coolant...09350986- SKU:
- 09350986
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- RUBBER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- UNITS:
- 25 PACK
$8.50 -
JAMES GASKET Trans O-Ring - M8 JGI-11900092
JAMES GASKET
$6.50Transmission sealing integrity is non-negotiable in high-performance applications—a single failed O-ring can compromise fluid pressure, create costly leaks, and sideline your build. The JAMES GASKET Trans O-Ring M8 is engineered to OEM specifications and...09350987- SKU:
- 09350987
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- O-RING
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- STREET
- UNITS:
- 25 PACK
$6.50 -
JAMES GASKET Tappet Cover Gasket 17976-04-F
JAMES GASKET
$14.95A properly sealed tappet cover is essential for preventing oil seepage and maintaining engine cleanliness—worn or damaged gaskets lead to messy leaks and potential internal contamination. This JAMES GASKET replacement delivers a reliable, long-lasting...09351098- SKU:
- 09351098
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- TAPPET COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$14.95 -
JAMES GASKET Clutch Hub Nut Seal Kit 12014-K
JAMES GASKET
$11.95A failing clutch hub nut seal compromises your entire drivetrain's integrity, allowing fluid seepage that degrades performance and reliability under racing conditions. This OEM-specification replacement kit restores proper sealing geometry and prevents...09350081- SKU:
- 09350081
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CLUTCH HUB
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL KIT
- UNITS:
- KIT
$11.95 -
JAMES GASKET Manifold Seal Kit - XL/Panhead 27062-78-2
JAMES GASKET
$15.95A worn or compromised manifold seal kit will introduce vacuum leaks that throw off your air-fuel ratio, causing rough idle, hesitation, and lost power—issues that are notoriously difficult to diagnose. The JAMES GASKET Manifold Seal Kit is engineered to...09350082- SKU:
- 09350082
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- PRODUCT NAME:
- SEAL KIT
- UNITS:
- KIT
$15.95 -
JAMES GASKET Intake Seal Kit 27002-E1671
JAMES GASKET
$11.95Air leaks at intake seals rob your engine of power and create unpredictable tuning issues that are nearly impossible to diagnose without proper gaskets. The JAMES GASKET Intake Seal Kit 27002-E1671 seals critical junctions between your carburetor, intake...09350085- SKU:
- 09350085
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL KIT
- UNITS:
- KIT
$11.95 -
JAMES GASKET Inspection Cover Seal - FLT/FXR 34906-79-DL
JAMES GASKET
$9.95Inspection cover seals are critical to maintaining your engine's integrity—they prevent oil seepage at the cover interface and protect against contamination that can compromise performance. JAMES Gasket's molded rubber design with metal inserts delivers...09350089- SKU:
- 09350089
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- APPLICATION:
- INSPECTION COVER
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$9.95 -
JAMES GASKET Trans Tab Lock 35216-36
JAMES GASKET
$8.20Transmission lock tab washers and snap rings wear out during rebuilds and high-mileage service—using OEM-quality replacements ensures proper retention and prevents catastrophic transmission failure. The JAMES GASKET Trans Tab Lock 35216-36 is engineered...09350094- SKU:
- 09350094
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- LOCK TAB
- UNITS:
- 5 PACK
- APPLICATION:
- COUNTERSHAFT
- APPLICATION:
- TRANSMISSION
- STYLE:
- 4-SPEED
$8.20 -
JAMES GASKET Intake Spacer Kit 29250-55
JAMES GASKET
$22.95Fuel temperature management directly impacts carburetor performance and engine reliability, especially under high-load conditions where heat soak can cause vapor lock and poor drivability. The JAMES GASKET Intake Spacer Kit thermally isolates your...09350100- SKU:
- 09350100
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- FIBER
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE MANIFOLD
- APPLICATION:
- CARBURETOR
- PRODUCT NAME:
- INSULATOR BLOCK KIT
- UNITS:
- KIT
$22.95 -
JAMES GASKET Rocker Cover Copper Washer Set 6114-C
JAMES GASKET
$7.95Rocker cover gasket leaks are a common headache for any serious engine builder, and worn copper washers are often the culprit. This OEM-quality washer set seals properly under load, preventing oil weeping that can compromise engine cleanliness and...09350101- SKU:
- 09350101
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- MATERIAL:
- COPPER
- APPLICATION:
- ROCKER COVER
- UNITS:
- KIT
$7.95 -
JAMES GASKET Rocker Cover Fiber Washer Set 6114-F
JAMES GASKET
$6.95A leaking rocker cover gasket compromises both engine aesthetics and performance by allowing oil to seep onto hot engine surfaces. The JAMES GASKET Rocker Cover Fiber Washer Set 6114-F delivers a reliable, cost-effective seal that restores proper gasket...09350102- SKU:
- 09350102
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- FIBER
- PRODUCT NAME:
- WASHER
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- APPLICATION:
- ROCKER COVER
$6.95 -
JAMES GASKET Rubber Rocker Cover Washer Set 6114-R
JAMES GASKET
$7.95Leaking rocker cover gaskets compromise engine sealing and create mess on your engine bay—James Gasket's rubber washer set provides the precision fit and durability needed to maintain a tight seal under high RPM conditions. These U.S.A.-made washers are...09350103- SKU:
- 09350103
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- APPLICATION:
- ROCKER COVER
- MATERIAL:
- RUBBER
- UNITS:
- KIT
$7.95 -
JAMES GASKET Pushrod Base O-Ring - XL 11377
JAMES GASKET
$9.70A failing pushrod base O-ring compromises cylinder head sealing and invites oil leakage that degrades engine performance and reliability. The JAMES GASKET XL 11377 delivers OEM-equivalent sealing with superior material durability, ensuring consistent...09350106- SKU:
- 09350106
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- PUSHROD COVER
- PRODUCT NAME:
- O-RING
- APPLICATION:
- PUSHROD TUBE
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- 10 PACK
$9.70 -
JAMES GASKET Pushrod O-Ring Kit - XL 11377-K
JAMES GASKET
$16.95A proper seal is the foundation of a reliable engine rebuild, and having the correct O-ring specifications on hand eliminates guesswork and prevents costly rework. The JAMES GASKET Pushrod O-Ring Kit delivers all the seals you need for a complete cam...09350107- SKU:
- 09350107
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- PUSHROD COVER
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL KIT
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
$16.95 -
JAMES GASKET Valve Stem Seal - Big Twin 18094-02
JAMES GASKET
$14.95Valve stem seals are critical to maintaining proper oil control in your Big Twin engine—without them, you're looking at oil blow-by, increased emissions, and accelerated wear on your valve guides and rings. JAMES GASKET's OEM-quality seals restore the...09350108- SKU:
- 09350108
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- TYPE:
- VALVE STEM
- PRODUCT NAME:
- SEAL
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
$14.95 -
JAMES GASKET Dip Stick O-Ring - Dyna/FLT 11120
JAMES GASKET
$8.30A worn or deteriorating dipstick O-ring allows oil to seep past the seal, leading to inaccurate oil level readings and potential oil loss during operation. This OEM-equivalent replacement restores a proper seal, ensuring reliable oil measurement and...09350114- SKU:
- 09350114
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- DIPSTICK
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
$8.30 -
JAMES GASKET Clutch Side Mainshaft Seal - Big Twin 12044-DL
JAMES GASKET
$14.95A leaking mainshaft seal transforms a routine maintenance item into a costly engine repair. The JAMES GASKET Clutch Side Mainshaft Seal eliminates oil seepage at the source, protecting your crankcase pressure and clutch assembly from contamination...DS194426- SKU:
- DS194426
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- MAIN DRIVE GEAR
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- EACH
$14.95 -
JAMES GASKET Motor Sprocket Seal 12026-B
JAMES GASKET
$21.30Motor sprocket seals are critical to preventing oil seepage at the crankshaft, which can compromise engine cleanliness and lead to costly internal damage over time. The JAMES GASKET 12026-B is engineered to maintain a reliable, long-lasting seal under...DS194455- SKU:
- DS194455
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- APPLICATION:
- SPROCKET SHAFT
- PRODUCT NAME:
- SEAL
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
$21.30
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.
