Safe for 426 Hemi Engines March 4, 2026 Solutions Central › Category: Fuel Additives / Treatments > Gasoline | Maintenance › Safe for 426 Hemi Engines 0 Vote Up Vote Down TJ asked 2 months ago Is this product safe for older 426 Hemi engines? 1 Answers 0 Vote Up Vote Down chemtooler Staff answered 2 months ago If you are referring to Berryman B-12 Fuel Injector Cleaner (part #0116), then yes. This product is safe for all gasoline engines. Thanks! Please login or Register to submit your answer Username or Email Address Password Remember Me