New to Powersport Superstore? Try our Year-Make-Model search and find the right parts for your ride by clicking "My Garage" on the upper-right! ➡

Engine - Gaskets & Seals - Case Rebuild Kits

33 products
Powersport Superstore is your go-to source for Engine - Gaskets & Seals - Case Rebuild Kits and related parts. Shop our unbeatable selection of Case Rebuild Kits with top-tier service, fast shipping, and great prices.
18% Off
Cometic Gasket C8303 Engine Case Rebuild Gasket Kit
$25.66
$25.66
$31.19
Contents:Oil Pan, Clutch Cover, Ignition Cover, Dyno. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not creep, crack or become britt...
Cometic Gasket C8072AFM Engine Case Rebuild Gasket Kit
$45.20
$45.20
Oil Pan, Clutch Cover, Ignition Box, Dyno,Transmission, Kick Start; AFM. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not creep, cr...
17% Off
Cometic Gasket C8612AFM Engine Case Rebuild Gasket Kit
$20.65
$20.65
$24.95
Contents:Mag Cover, Ignition Pickup, Carb, Clutch Cover. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not creep, crack or become br...
31% Off
Cometic Gasket C8685 Engine Case Rebuild Gasket Kit
$47.92
$47.92
$68.95
Contents:Oil Pan, Clutch Cover, Pulsing Cover, Generator Cover. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not creep, crack or be...
18% Off
Cometic Gasket C9890 Motor Only Gasket Kit
$131.19
$131.19
$159.55
Every gasket in these kits uses the best materials possible for its intended application. Multi-Layer Steel (MLS) head gaskets. Steel Viton-coated base gaskets. Blue Viton valve stem seals. Aluminu...
11% Off
Cometic Gasket C8713 Engine Case Rebuild Gasket Kit
$61.08
$61.08
$68.95
Contents: Generator, Oil Pan, Clutch Cover, Breather and Pulser. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not creep, crack or b...
19% Off
Cometic Gasket C10128-040 Motor Only Gasket Kit - 110in. Big Bore Kit and .030in. Head Gasket
$137.56
$137.56
$169.00
Every gasket in these kits uses the best materials possible for its intended application. Multi-Layer Steel (MLS) head gaskets. Steel Viton-coated base gaskets. Blue Viton valve stem seals. Aluminu...
32% Off
Cometic Gasket C8752AFM Engine Case Rebuild Gasket Kit
$44.46
$44.46
$65.80
Contents: Starter Idler Gear Cover, Starter Clutch Breather Cover, Cam Chain, Magneto Cover, Clutch Cover, and Oil Pan. High-quality products for long term reliability. Manufactured from premium f...
15% Off
Cometic Gasket C8402 Engine Case Rebuild Gasket Kit
$20.65
$20.65
$24.30
Contents:Clutch Cover, Generator Cover. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle. Made in th...
21% Off
Cometic Gasket C8592 Engine Case Rebuild Gasket Kit
$25.53
$25.53
$32.42
Contents:Mag Cover, Clutch, Oil Pan, Starter Idler Gear, Starter Clutch. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not creep, cr...
31% Off
Cometic Gasket C8750AFM Engine Case Rebuild Gasket Kit
$45.55
$45.55
$65.80
Contents: Generator Cover Gasket, Starter, Idle Gear Cover, Small Starter Cover, Clutch Cover, Gasket, and Oil Pan Gasket. High-quality products for long term reliability. Manufactured from premiu...
28% Off
Cometic Gasket C8739 Engine Case Rebuild Gasket Kit
$36.75
$36.75
$51.11
Contents: Alternator Cover, Clutch Cover, Cam Chain Cover, and Oil Pan Gasket. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not cre...
16% Off
Cometic Gasket C8146 Engine Case Rebuild Gasket Kit
$21.41
$21.41
$25.56
Engine case rebuild gasket kits include all gaskets needed for lower end rebuild (base gasket not included). Includes: O, OP, C. High-quality products for long term reliability. Manufactured from ...
27% Off
Cometic Gasket C8211 Engine Case Rebuild Gasket Kit
$35.60
$35.60
$48.70
Contents: Oil Pan, Clutch Cover, Dyno Ignition, Cam Chain, California Emission. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not cr...
28% Off
Cometic Gasket C8633 Engine Case Rebuild Gasket Kit
$36.75
$36.75
$51.11
Contents: Cam Chain, Clutch, Ignition, Oil Pan, and Generator. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not creep, crack or bec...
Cometic Gasket C8072 Engine Case Rebuild Gasket Kit
$192.80
$192.80
Contents:Oil Pan, Clutch Cover, Ignition Box, Dyno, Transmission, Kick Start. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not cree...
Cometic Gasket C8588 Engine Case Rebuild Gasket Kit
$39.06
$39.06
Contents:Crankcase Cover, Cam Chain Tensioner,Carburetor, Oil Pump Cover, Crankcase Oil Strainer. High-quality products for long term reliability. Manufactured from premium fuel-resistant material...
Cometic Gasket C8682 Engine Case Rebuild Gasket Kit
$85.66
$85.66
Contents: Oil Pan, Clutch Cover, Starter Idler Gear Cover, Starter Clutch Cover. High-quality products for long term reliability. Manufactured from premium fuel-resistant materials that will not c...
Secure, Trusted, and Encrypted

Protected by industry-leading 256-bit SSL encryption and backed by Shopify’s PCI DSS–compliant infrastructure. Every page, click, and transaction is encrypted and monitored for threats — so you can shop with confidence knowing your data stays protected.

Parts for Every Machine

We stock aftermarket parts, gear and accessories for motorcycles, ATVs, UTVs, snowmobiles, personal watercraft, and even performance cars — all backed by expert support and live inventory.

Real-Time Fitment Accuracy

Search by Year, Make, and Model with confidence. Our proprietary vehicle fitment system ensures you’re only shown what fits — no guesswork, no returns — just parts that fit.

Fast, Trackable Shipping

We ship from over 20 U.S. warehouses — often same or next business day. Every order includes tracking and transparent fulfillment updates from start to finish, all processed through a secure, encrypted checkout.

Quick Links

Ride With Us. Stay Connected.

Follow us for real-time fitment updates, gear drops, and pro tips from the garage. No spam, just parts, tech, and news for riders like you.

Your Garage

Add a Vehicle