Product Description
Direct-fit reman injector set for 2007.5–2012 Ram 2500/3500 trucks equipped with the 6.7L Cummins. Includes SIX Industrial Injection stock reman injectors and SIX Bosch connecting tubes for a complete, ready-to-install solution. Built with brand-new OEM components, balanced to tighter-than-factory tolerances for smooth performance and reliability.
Fitment
- Ram 2500/3500 6.7L Cummins (2007.5–2012)
Note: This kit is for pickup applications. For Cab & Chassis models, see our 6.7L Cummins Injectors & Kits category for alternatives.
Why This Kit
- Includes SIX reman stock injectors + SIX Bosch connecting tubes
- Direct replacement; engineered to OEM specs
- 2-Year, unlimited-mileage warranty
What's Included
- (6) Industrial Injection stock reman injectors
- (6) Bosch connecting tubes
- Copper washers & O-rings
Recommended Parts (all CPP Diesel links)
- Injector Seal Kit (one per injector): MAHLE GS33614
- Injector Install Kit (lines, gaskets, tubes): BD Diesel 1050157
- CP3 Injection Pumps (stock & performance): 2007.5–2018 CP3 Pumps
- Fuel Filtration (’07.5–’12 severe-duty kit): Mopar 68083853AC
- Browse all injectors & accessories: 6.7L Cummins Injectors
Specifications
| Brand | Industrial Injection |
|---|---|
| Part Number | 21D303 |
| Application | 2007.5–2012 Ram 2500/3500 6.7L Cummins (pickup) |
| Contents | (6) Reman stock injectors, (6) Bosch connecting tubes, seals |
| Condition | Remanufactured (built with new OEM internals) |
| Warranty | 2 Years / Unlimited Mileage |
| UPC | 840256904888 |
| Core Charge | $100 per injector (refundable upon acceptable core return) |
| Emissions | Stock replacement |
Helpful Notes
- Always flush/replace fuel filters and inspect high-pressure lines during injector service.
- Programming is not required for stock injectors on stock ECM calibrations.
FAQ
Will these injectors fit my 2011 Ram 3500 6.7L?
Yes—this kit is designed for 2007.5–2012 Ram 2500/3500 pickups with the 6.7L Cummins.
Do I need new connector tubes?
No—this package includes six new Bosch connecting tubes. If you need additional hardware, see our 6.7L Injectors & Kits.
Is tuning required after install?
No tuning is required for stock-output replacement injectors.
What else should I replace while I’m in there?
At minimum, fresh seals (MAHLE GS33614), consider an install kit, and ensure your CP3 and filtration are healthy (CP3 options, filtration kit).
