Fits: 2011 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LML Duramax Diesel THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT IS NOT LEGAL IN CALIFORNIA All S&S injectors are calibrated on genuine Bosch equipment in actual conditions. These are not just a run of the mill aftermarket nozzle thrown on an abrasive hone machine and put in box. S&S Diesel Motorsport will go the extra step to provide the up most quality which will equate to a better, smoother and more efficient running engine. Once the nozzles are opened up to the desired flow percentage, then the injector is reassembled and the set is balanced to within +/- 5%. S&S Upgrades ⦁ Proprietary nozzle honing process for clean and consistent holes ⦁ Nozzles flow-matched to 1% variance per set, using OE standards ⦁ Viscor SAE-J967 ⦁ 40 degrees C ⦁ 100 bar ⦁ Injectors flow-matched to 3% variance per set (except TorqueMaster) ⦁ Viscor SAE-J967 ⦁ 40 degrees C ⦁ 4 different pressure/energizing points per injector ⦁ Injection profiles (rate shape) aligned ⦁ Injector build spec custom-matched to nozzle flow rate for each size, which includes internal modifications (piezo mod) Options The industry has adopted a % increase in nozzle flow over stock as the sizing convention Available sizes: TorqueMaster, 30%, 45%, 60%, 80%, 100%, 150%, 200%, 250%, 300% Core returns required – $150 charge if no core returned. Inquire for custom sizes. Notes: 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