Gaskets and Seals› Engine Gaskets and Seals

Apexi

Metal Head Gasket RB25DET

$447.23

SKU: A02U 814-N204

In Stock
In Stock
Ships by Jun 9
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The A'PEXi metal head gasket (MPN 814-N204) provides upgraded protection on high horsepower RB25DET engines. Factory head gaskets often fail under high output operation, and A'PEXi recommends replacing them with a metal one to prevent engine damage. This engine-specific gasket (88mm bore, 2.1mm thickness for 87mm overbore) ensures a complete and secure seal, resulting in an 8.2 compression ratio.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

Available on iOS & Android

Specifications

BrandApexi
Part NumberA02U 814-N204

Videos

7. RB25DET DISASSEMBLY - 240SX Build

7. RB25DET DISASSEMBLY - 240SX Build
RB26DETT rebuild, reinforcements and improvements. Nissan Skyline GT-R

RB26DETT rebuild, reinforcements and improvements. Nissan Skyline GT-R
3. Engine Bay Assembly - RB25DET 240sx Build

3. Engine Bay Assembly - RB25DET 240sx Build

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.

View Full Return Policy