Detroit Diesel 71 Series Inline 6 Cylinder Block With Roots Blower - Used Core

**Application:** Believed to be a Detroit Diesel two-stroke 71 Series inline-six cylinder block (6-71 family) with side-mounted Roots blower, as used in marine, industrial, and generator-set installations. Model and application are NOT verified — no data plate, casting number, or serial number was legible, so identification is by appearance only. **Condition:** Used, untested rebuildable core / parts-only. Heavy surface rust throughout, debris and loose hardware inside cylinder bores, and the assembly is incomplete (no heads, injectors, valve train, pan, or manifolds). Internal condition is unknown; the block has not been turned, tested, magnafluxed, or pressure checked. Blower housing present but untested. Expect full teardown, cleaning, inspection, and machine work. Heavy freight item requiring forklift/crane handling; residual fluids drained and ports capped before shipping. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.