Product Description
Industrial Injection 21B301 Reman Injector Pack w/ Connecting Tubes is a complete, OE-quality stock replacement set for 2010–2012 Ram 4500/5500 6.7L Cummins Cab & Chassis (common-rail). Each injector is balanced to tighter-than-OEM tolerances for smooth idle, clean emissions, and long service life. Includes six Bosch connecting (feed) tubes for a proper seal on first start.
- Complete kit: (6) reman stock injectors + (6) Bosch connecting tubes
- OEM-grade components: new nozzles & critical internals, built in-house
- Balanced & matched: tighter tolerance than OEM for reliability
- Direct replacement: designed for stock power & drivability
- Warranty: 2-year / unlimited-mileage (manufacturer)
Fitment
2010–2012 Ram 4500/5500 Cab & Chassis with 6.7L Cummins (common-rail). Not for pickup models.
Note: If you’re working on 2013–2018 Cab & Chassis, see later injector kits on our site. VIN check recommended before ordering.
What’s Included
- (6) Industrial Injection reman stock common-rail injectors
- (6) Bosch injector connecting tubes
Recommended Parts (CPP internal links)
- Injector Install Kit – 6.7L Cummins (gaskets, lines, seals)
- 6.7L Cummins Injectors & Accessories (category)
- CP3 High-Pressure Pumps (2007.5–2018)
- S&S 6.7C Injector Upgrades (performance option)
Helpful Notes
- Always replace connecting tubes with new injectors (included) to ensure sealing & balance.
- Bleed air thoroughly after install; follow Cummins torque & cleanliness procedures.
- Core charge may apply; retain OEM cores for return.
Specifications
| Brand | Industrial Injection |
| Part Number | 21B301 |
| Engine | 6.7L Cummins (Cab & Chassis) |
| Model Years | 2010–2012 |
| Configuration | (6) Reman Stock Injectors + (6) Bosch Connecting Tubes |
| Warranty | 2 Years / Unlimited Miles (manufacturer) |
| UPC | 840256904826 |
FAQ
Is this kit for pickup trucks?
No. Part 21B301 is for Cab & Chassis 6.7L platforms (Ram 4500/5500) for 2010–2012. Pickup models use different calibration/components.
Do I need new connecting tubes?
Yes—reusing old tubes can cause sealing issues. This kit includes six new Bosch tubes for a proper seal and balanced flow.
Will this work on 2013–2018 Cab & Chassis?
For many 2013–2018 Cab & Chassis applications, a different injector part number is specified. Check our Cab & Chassis injector listings or contact us with your VIN.
Is tuning required?
No. These are stock reman injectors—no tuning required on a stock truck in good health.
What else should I replace during the job?
We recommend the injector install kit, fresh fuel filters, and inspecting the CP3 for rail pressure stability. See our 6.7L injector category for related parts.
