Gaskets and Seals› Engine Gaskets and Seals

TwinPower

Twin Power 99-17 Twin Cam Big Twins 3.937 Inch Bore Top End Gasket Kit

$208.99

SKU: T09O 043156

In Stock
In Stock
Ships by Jun 18
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Twin Power 043156 Top End Gasket Kit is designed for Harley-Davidson Twin Cam Big Twin engines with a 3.937-inch bore, covering model years 1999-2017. This comprehensive kit includes head gaskets, base gaskets, rocker cover gaskets, and o-rings to ensure a complete sealing solution for engine rebuilds and top-end services.

Manufactured to meet or exceed OEM specifications, Twin Power gaskets provide reliable sealing to prevent oil leaks and maintain compression. This direct replacement kit is essential for cylinder head removal, valve service, or any top-end engine work, ensuring dependable performance and durability.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandTwinPower
Part NumberT09O 043156

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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