OEM vs Aftermarket Camshaft: Heavy-Duty Diesel Guide (2026)

OEM vs Aftermarket Camshaft: Heavy-Duty Diesel Guide (2026)

Quick Answer: OEM camshafts provide the clearest brand-authorized sourcing and fitment path, while a qualified OE-equivalent aftermarket camshaft may reduce acquisition cost and lead time for an out-of-warranty engine. The right choice depends on OEM-number and...