Industrial Injection Stock New Heads 04.5-05 GM 6.6L Duramax LLY BUL-30420 Constructed from high-quality PVC foam

Constructed from high-quality PVC foam padding to protect your truck's finish from chips

it's just not as stable as it needs to be

rattle free

Get rid of your soft shifts and turn them into quick

these hoses can handle extreme heat and pressure

Industrial Injection Stock New Heads 04.5-05 GM 6.6L Duramax LLY BUL-30420 Constructed from high-quality PVC foamAre you rebuilding or just looking to increase your Duramax's strength? If you are planning on upgrading the power your engine puts out it's a good idea to increase durability and eliminate cracking. Industrial Injection's New Heads for the Duramax LLY are a great place to start because these brand new GM OE cylinder heads have a reinforced casting to make them more durable and help eliminate cracking. Each head has been pressure tested and comes