NAPA Gold Replacement Fuel Filter 2001-2016 6 Duramax Safeguard your high pressure fuel system with a quality NAPA Gold Fuel Filter! Check out the deal on NAPA Gold Replacement Fuel Filter 01-16 6 Duramax at Diesel Power Products. NAPA-3960XE NAPA Gold Replacement Fuel Filter 01-16 6 Duramax. $44. Write A Review. Napa Gold 3910 vs ACDelco fuel filter - Diesel Place Sep 28, 2009Napa Gold 3910 vs ACDelco fuel filter. 6 Duramax LBZ / Allison trans / manual T-case with Riverside Gear pump-rub-elimination upgrade / coolant bypass filter / PCV reroute I agree, both the OEM and the Napa Gold oil filter are both good oil filters. There are a few other good filters also, but I'll stick to the question.