Fits: 2004.5 thru 2005 Chevy Silverado/GMC Sierra 2500HD/3500HD LLY Duramax Diesel

*Please contact us for current lead times*

The Industrial Injection 50% over R4 Injectors have been extrude honed and balanced to a perfect matching set injectors that flow 29LPM. The R4 50% over injectors should be ran with a upgraded turbo, single S400 or compound turbo setup to run more efficiently and to help reduce EGTs. Also recommend a CP3 upgrade like the 120% over Double Dragon Fire Pump or Dual CP3 Kit. The injectors are balanced to a tighter tolerance than the original manufacturer and have put a lot of time into making these the best injectors money can buy. All the injectors are built in house with BRAND NEW Factory OEM parts including the nozzles.

Features:

• Better Fuel Economy
• 50% Over / 29LPM
• 1 year Unlimited Mileage Warranty

Notes:

• Injectors come with a new copper crush washer and o-rings for installation. Injectors are an OEM Genuine part that is a direct replacement injector. 
• All Industrial Injection / OEM products are covered by a one year/unlimited mile warranty.
• Injectors sold individually
• THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT IS NOT LEGAL IN CALIFORNIA.
• All Core Return Costs are responsible to the customer. Please contact our customer support team with any core return questions you may have. Core returns must be processed online via the Return Request Form