Description
Cylinder Head Kit for Detroit Diesel Series 71 (671) Diesel Engines, Part Number: MCB671
Why Choose Our New Cylinder Head Kit for Your Detroit Diesel 671 Engine?
- HHP’s 671 Detroit Diesel parts meet or exceed OEM specifications
- Complete kit format saves time sourcing individual cylinder head components
- Available with your choice of rod bearing and main bearing size for a precise fit
- Backed by a 2 Year Unlimited Mileage, Parts and Labor Warranty
Rebuild Your Detroit Diesel 671 With Confidence
HHP’s Cylinder Head Kit for the Detroit Diesel Series 71 engine family (part number MCB671) is built for shops and owner-operators who need dependable 671 Detroit Diesel parts to bring an aging two-stroke engine back to full working order. This kit is put together to simplify a job that can otherwise mean tracking down dozens of individual components from multiple suppliers.
The Detroit Diesel 6-71 and related 71 series engines have been powering trucks, marine applications, generators, and industrial equipment for decades, and a lot of that equipment is still working hard today. Keeping an engine like this running means having access to real 671 Detroit Diesel parts, not generic substitutes that were never built to the tolerances these engines require. A cylinder head that has been overhauled with quality components is one of the most important steps in getting reliable compression, proper cooling, and long service life out of a rebuild.
This cylinder head kit is offered with a choice of rod bearing and main bearing sizes, including standard and oversized options up to .050, so you can match the kit to the actual condition of your block during a rebuild. That flexibility matters on older 671 engines, where cylinders and journals have often been machined at some point in their service life.
Sourcing 671 Detroit Diesel parts from HHP means you are not left guessing whether a part will actually fit your specific engine application. Our team can help confirm your engine details before your order ships, and our ASE certified technicians are available to answer questions about your rebuild from start to finish. This kit is backed by a 2 Year Unlimited Mileage, Parts and Labor Warranty, giving you real confidence in a part built to go the distance.
With technical knowledge, dependable 671 Detroit Diesel parts, fast shipping, and unbeatable customer service, HHP is the place to source your next engine rebuild kit.
Contents: (1) New Detroit Diesel Series 71 Cylinder Head Kit, Part Number MCB671
Looking for other 671 Detroit Diesel parts for your rebuild? Browse our full line of Detroit Diesel Engine Parts or shop Engine Rebuild Kits for more complete kit options. Have questions about your rebuild? Visit Warranties for coverage details.
FAQs About Detroit Diesel Series 71 (671) Cylinder Head Kit, MCB671
1. What engines is this cylinder head kit compatible with?
This cylinder head kit is built for Detroit Diesel Series 71 engines, commonly known as the 671 or 6-71 engine family. If you are unsure whether it matches your specific application, our team can help confirm fitment before you order.
2. What rod and main bearing sizes are available?
This kit is available with standard, .010, .020, .025, .030, and .050 rod bearing and main bearing options, so you can select the size that matches the actual condition of your block during a rebuild.
3. What is included in this cylinder head kit?
This is a complete cylinder head kit designed to simplify a 671 engine rebuild by bundling the core components needed for the job, saving you the time of sourcing individual 671 Detroit Diesel parts separately.
4. Is this a new or used cylinder head kit?
This is a brand new kit, not a used or reconditioned assembly, so you are starting your rebuild with fresh components rather than parts of unknown history.
5. What warranty comes with this kit?
This kit is backed by a 2 Year Unlimited Mileage, Parts and Labor Warranty, giving you extended coverage on both the components and the labor involved in installing them.
6. Why is finding genuine 671 Detroit Diesel parts important for older engines?
Older Detroit Diesel 671 engines were built to tight mechanical tolerances specific to their two-stroke design. Using parts engineered to those original specifications helps ensure proper compression, cooling, and long-term reliability compared to generic aftermarket substitutes.
7. Can HHP help verify this kit fits my specific engine?
Yes. Since diesel engine parts are often engine specific, we recommend providing your engine serial number or model details so our team can confirm fitment before your order ships.
8. How is this cylinder head kit shipped?
Given the size and weight of a full cylinder head kit, shipping is handled through our standard freight process. In stock orders placed by 2pm EST typically ship the same day, Monday through Friday.
9. Does HHP offer other parts for Detroit Diesel 671 engine rebuilds?
Yes. HHP carries a broader selection of 671 Detroit Diesel parts and engine rebuild kits for related Series 71 applications. Reach out to our team if you need help finding additional components for your rebuild.







