WOSSNER - K4074D554-2 - Piston Kit - 4.375” Stroke - 119 CID - M8
Engine rebuilds are only as good as the parts that go back in, and when it comes to the piston — the component under more sustained thermal and mechanical stress than anything else in the top end — there is no room for compromise. The WOSSNER K4074D554-2 is a precision-engineered piston kit for 4.375” Stroke / 119 CID / M8 engines, built to hold dimensional tolerances across thousands of heat cycles. Crown is anodized to improve resistance to extreme heat, giving you the kind of fit-from-day-one accuracy that prevents premature wear on the cylinder wall, wrist pin, and rings. Tested and proven to improve thermal diffusivity by up to 10%. Piston Size: 4.1525". Whether you are overboring for more displacement or simply replacing what age and hours have worn out, the K4074D554-2 gives you a forged foundation you can trust.
Features
- Crown is anodized to improve resistance to extreme heat
- Tested and proven to improve thermal diffusivity by up to 10%
- Hardcoat anodize treatment enhances the piston's abilities to manage heat and wear
- Ring groove wear is improved with anodize treatment ability to handle sliding wear as compared to non-treated surfaces
- Kit includes piston, piston rings, piston pin and retaining clips
- Valve Pocket Specifications:
- Intake Diameter: 1.780"
- Intake Depth: 0.200"
- Intake Angle: 27.000°
- Exhaust Diameter: 1.780"
- Exhaust Depth: 0.200"
- Exhaust Angle: 27.000°
Specifications
- Piston Size: 4.1525"
- Bore Size: 4.155"
- Compression Ratio: 11.0:1
- Displacement: 119"
- Type: Big Bore
- Riding Style: Street
- Product Name: Piston Kit
- Units: Kit
- Stroke Length: 4.375"
- Model: Premium Plus Series
Frequently Asked Questions - WOSSNER - K4074D554-2 - Piston Kit - 4.375” Stroke - 119 CID - M8
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
