
A 3977221 New 6.7 Cummins Cylinder Head is a brand‑new, fully machined replacement head for 6.7L Cummins ISB 24‑valve diesel engines, designed to restore durability, sealing, and performance in pickup and medium‑duty applications.
Why Shop with Young & Sons?
With over 75 years of diesel engine expertise, Young & Sons offers quality and fast availability for all your engine needs.