Browse Cummins B6.7 Engine Plumbing for sale on MyLittleSalesman.com. Compare prices, photos, and seller details across 5 listings. Cummins B6.7 Engine Plumbing pricing ranges from $40 to $75 based on recent marketplace data. Filter by condition, price, or year to find the right Cummins B6.7 Engine Plumbing.