Cathedral Port 245cc 4.000"(+) Bore - Single Black Label CNC Cylinder Head - Bare

Marsoni

M251S

$915.48

Get it in 3 business days with 1 day shipping. Friday, May 29

Cathedral Port 245cc 4.000"(+) Bore - Single Black Label CNC Cylinder Head - Bare>Download the cylinder head spec sheet< The Mast Motorsports cylinder head product line is completely manufactured from a raw casting to a finished cylinder head in the USA located in Nacogdoches Texas. Mast refuses to compromise on materials and methods that may jeopardize longevity, performance, and quality. When buying Mast Cylinder heads, you are getting the highest level of quality and performance on the market. Full Send, no compromises, no

Easy Shipping

Quick Dispatch:

Your Cathedral Port 245cc 4.000"(+) Bore - Single Black Label CNC Cylinder Head - Bare orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Cathedral Port 245cc 4.000"(+) Bore - Single Black Label CNC Cylinder Head - Bare ships.

Need Help?
Questions about Cathedral Port 245cc 4.000"(+) Bore - Single Black Label CNC Cylinder Head - Bare, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Cathedral Port 245cc 4.000"(+) Bore - Single Black Label CNC Cylinder Head - Bare in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

I used this as a replacement starter for a 2008 CRV. Quick answer, it works so far and sounds fine. It replaced a fairly newly rebuilt OEM starter - "factory rebuilt in the USA" - so much for them- very dissapoiinting. When I looked for replacement EVERY starter I looked at locally had horrible reviews online with consistency issues - some worked, some didn't. I figured, if that's the case, buy the cheapest one. So far this Boatrip is the real deal - beautifully machined and went in just like the original. I went ahead and took off the intake manifold - it was a huge job for me. I ended up tearing my throttle body gasket and didn't replace it. Now I have a fast idle check engine light. So, I'll need to take that part apart and replace the gasket. I guess it's sucking air and throwing off the idle speed. otherwise, the YouTube videos really helped on the repair. I hope I don't have to do it again. Good luck!

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on September 6, 2025

Verified Purchase

Kayla

Whiting, US

★★★★★ 5

Good 👍

Works just like oem

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 26, 2026

Verified Purchase

Whorley boi