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 Shifter Shaft Seal - FX 60641-74
JAMES GASKET
$19.90A leaking shifter shaft seal compromises your transmission's integrity and creates messy, costly fluid loss. The JAMES GASKET Shifter Shaft Seal FX 60641-74 delivers a factory-quality replacement that stops seepage and restores proper transmission...DS194462- SKU:
- DS194462
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- SHIFTER SHAFT
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$19.90 -
JAMES GASKET Metal Point Seal - Big Twin 83162-51
JAMES GASKET
$18.30A proper primary cover seal is critical to keeping oil where it belongs—inside your engine. The JAMES GASKET Metal Point Seal eliminates weeping and seepage at the primary cover, protecting your drivetrain's reliability during aggressive riding or racing...DS194464- SKU:
- DS194464
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- CAMSHAFT
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$18.30 -
JAMES GASKET Mainshaft Seal 4 Speed - Big Twin 37741-82-A
JAMES GASKET
$10.95A compromised mainshaft seal leads to fluid leakage, accelerated wear on internal components, and potential catastrophic transmission failure. The JAMES GASKET Mainshaft Seal is engineered to maintain a reliable barrier between your transmission fluid...DS194468- SKU:
- DS194468
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- MAIN DRIVE GEAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$10.95 -
JAMES GASKET Motor Gasket Kit - Twin Cam 17053-99-MLS
JAMES GASKET
$163.95A quality motor gasket kit is the foundation of engine reliability, preventing oil leaks and combustion gas escape that compromise performance and longevity. The JAMES GASKET Motor Gasket Kit for Twin Cam engines delivers OEM-equivalent sealing with...09351092- SKU:
- 09351092
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TYPE:
- ENGINE
$163.95 -
JAMES GASKET Motor Gasket Kit - Twin Cam 17055-05-X
JAMES GASKET
$130.95Engine gasket integrity is non-negotiable in high-performance applications—blow-by, oil weeping, and coolant leaks will destroy your build and sideline you from the track. The JAMES GASKET Motor Gasket Kit for Twin Cam engines delivers OEM-quality...09351093- SKU:
- 09351093
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
$130.95 -
JAMES GASKET Top End Gasket Kit 17056-99-MLS
JAMES GASKET
$137.95A complete top-end gasket kit is essential for any engine rebuild—it's the foundation that prevents oil leaks, maintains compression, and ensures reliable performance across all operating conditions. JAMES GASKET's 17056-99-MLS delivers OEM-quality...09351094- SKU:
- 09351094
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TYPE:
- PRIMARY COVER
$137.95 -
JAMES GASKET Rocker Cover Washer - XL/XR 6589
JAMES GASKET
$11.60A leaking rocker cover gasket compromises engine sealing and invites oil contamination into your combustion chamber—exactly what you don't need when you're pushing performance limits. The JAMES GASKET Rocker Cover Washer is engineered to deliver...09350363- SKU:
- 09350363
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- ROCKER COVER
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- UNITS:
- 20 PACK
$11.60 -
JAMES GASKET Breather Seal - XL/XR 17393-07
JAMES GASKET
$23.80A properly sealed breather system is critical to engine longevity—preventing oil contamination and maintaining consistent crankcase pressure directly impacts ring seal integrity and overall reliability. The JAMES GASKET Breather Seal eliminates leakage...09350371- SKU:
- 09350371
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- APPLICATION:
- BREATHER
- APPLICATION:
- ROCKER COVER
$23.80 -
JAMES GASKET Shifter Shaft Seal - FLT 37101-84-B
JAMES GASKET
$15.70A leaking shifter shaft seal compromises both your transmission's performance and your engine bay's cleanliness. JAMES GASKET's precision-engineered seal for FLT models delivers a reliable, long-lasting barrier against fluid loss and contamination. This...09350372- SKU:
- 09350372
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- APPLICATION:
- CLUTCH RELEASE LEVER
- UNITS:
- 5 PACK
$15.70 -
JAMES GASKET Intake Manifold Seal - Twin Cam 26992-99
JAMES GASKET
$11.95A compromised intake manifold seal introduces vacuum leaks that disrupt air-fuel ratios, reduce combustion efficiency, and cost you horsepower you've already built. This JAMES GASKET seal is engineered to maintain a perfect seal on Twin Cam engines,...09350284- SKU:
- 09350284
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE MANIFOLD
- PRODUCT NAME:
- SEAL
- UNITS:
- PAIR
$11.95 -
JAMES GASKET Start Yoke O-Ring - Big Twin/XL 31695-90
JAMES GASKET
$3.95A leaking starter yoke o-ring doesn't just waste your time—it compromises engine sealing integrity and can lead to costly oil seepage on your Big Twin or XL Sportster. JAMES Gasket's OEM-equivalent replacement ensures a precision seal that maintains...09350285- SKU:
- 09350285
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- TYPE:
- STARTER MOTOR
- PRODUCT NAME:
- O-RING
- APPLICATION:
- YOKE
- UNITS:
- PAIR
$3.95 -
JAMES GASKET Lower Pushrod Cover O-Ring 11145-A
JAMES GASKET
$8.30Lower pushrod cover leaks compromise engine seal integrity and can lead to oil seepage that affects performance and longevity. The JAMES GASKET Lower Pushrod Cover O-Ring delivers a factory-quality seal replacement that restores the barrier between your...09350116- SKU:
- 09350116
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- APPLICATION:
- PUSHROD COVER
- UNITS:
- 10 PACK
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- APPLICATION:
- TAPPET GUIDE
$8.30 -
JAMES GASKET Main Drive Gear Spacer O-Ring - 6 Speed 11201
JAMES GASKET
$9.20Proper main drive gear spacing is critical to transmission longevity and shift quality in 6-speed boxes. This OEM-specification O-ring spacer maintains precise tolerances between gear engagement points, preventing premature wear and ensuring consistent...09350117- SKU:
- 09350117
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN DRIVE GEAR
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- TYPE:
- OIL
$9.20 -
JAMES GASKET Primary Drain Plug O-Ring 11324
JAMES GASKET
$8.40A leaking primary drain plug doesn't just waste oil—it compromises engine protection and creates a mess in your garage or on the track. The JAMES GASKET Primary Drain Plug O-Ring 11324 is a straightforward replacement that eliminates weeping seals and...09350118- SKU:
- 09350118
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- DRAIN PLUG
- PRODUCT NAME:
- O-RING
- UNITS:
- 10 PACK
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY COVER
$8.40 -
JAMES GASKET Starter/Case O-Ring - Big Twin 27444-00-Y
JAMES GASKET
$6.60A leaking starter O-ring isn't just messy—it compromises your engine's seal integrity and can lead to oil seepage that affects starter performance and overall reliability. The JAMES GASKET Starter/Case O-Ring is engineered to provide a precision fit on...09350119- SKU:
- 09350119
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- STARTER MOTOR
- PRODUCT NAME:
- O-RING
- UNITS:
- 5 PACK
- APPLICATION:
- CRANKCASE
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$6.60 -
JAMES GASKET Starter Shaft Seal - Big Twin 12066-A
JAMES GASKET
$29.60A failing starter shaft seal compromises engine integrity and invites oil seepage into your primary case—a costly problem that compounds quickly in high-performance Big Twin applications. The JAMES GASKET Starter Shaft Seal delivers OEM-grade durability...09350122- SKU:
- 09350122
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- STARTER SHAFT
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SEAL
$29.60 -
JAMES GASKET Main Drive Gear - Twin Cam 12074
JAMES GASKET
$10.95A failing main drive gear shaft seal is a silent killer in Twin Cam engines—it allows oil to weep into areas where it has no business being, compromising both engine cleanliness and performance. The JAMES GASKET Main Drive Gear is engineered to eliminate...09350123- SKU:
- 09350123
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN DRIVE GEAR
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
$10.95 -
JAMES GASKET Main Drive Gear Seal - Big Twin 12074-K
JAMES GASKET
$26.95Main drive gear seals are critical to preventing oil leakage from your Big Twin engine, protecting both your transmission fluid and your garage floor. A worn or failing seal can lead to costly internal damage and compromised drivetrain performance. JAMES...09350124- SKU:
- 09350124
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- APPLICATION:
- MAIN DRIVE GEAR
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL KIT
- UNITS:
- KIT
$26.95 -
JAMES GASKET Inner Primary Bolt Seal 31434-06
JAMES GASKET
$13.30Inner primary bolt seals are critical for preventing oil seepage at the crankcase, which can lead to messy leaks, contaminated engine bays, and potential oil loss during high-performance riding. The JAMES GASKET Inner Primary Bolt Seal maintains a tight,...09350127- SKU:
- 09350127
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- MOTOR
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- APPLICATION:
- INNER PRIMARY
- RIDING STYLE:
- STREET
$13.30 -
JAMES GASKET Trans to Engine Seal - Twin Cam 35607-06
JAMES GASKET
$15.95A leaking transmission-to-engine seal will compromise your oil pressure, reduce bearing protection, and leave a mess under your bike. The JAMES GASKET Trans to Engine Seal is engineered for Twin Cam applications to deliver a reliable, leak-free interface...09350128- SKU:
- 09350128
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- APPLICATION:
- ENGINE
- PRODUCT NAME:
- SEAL
$15.95
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.
