Industrial Injection 0986435621-R4 Race 4 Reman Common Rail Injector 6.7L Cummins 250HP 115% Over

The Industrial Injection 0986435621-R4 is a remanufactured Race 4 (R4) performance common rail fuel injector engineered for the 6.7L Cummins diesel engine. Rated at 250HP / 115% over stock fuel flow, this injector is ideal for diesel enthusiasts seeking a meaningful performance upgrade while retaining streetable reliability.

OE Spec Plus Remanufacturing Process:

• Original OE Bosch injector body remanufactured and calibrated in-house using Bosch machines and procedures
• Performance nozzle engineered using an EDM extrude hone process to achieve precise balance and flow matching
• Each injector is fully tested to ensure proper balance and consistent fuel delivery
• Rated at 45 LPM / 250HP / 115% over stock nozzle flow
• Includes new copper crush washers and O-rings for installation
• Direct drop-in replacement for stock 6.7L common rail injectors

Performance Benefits:

• Significant increase in fueling capacity over the factory injector
• Improved fuel atomization for cleaner, more efficient combustion
• Potential reduction in exhaust gas temperatures (EGTs)
• Compatible with stock turbo systems; pairs well with upgraded or compound turbo setups for maximum power

Important Installation Notes:

• Industrial Injection strongly recommends replacing injector connecting tubes during installation to prevent new injector contamination
• OEM cross-reference: 0986435621
• A $150 core charge applies per injector; core is fully refundable when returned within 45 days
• Covered by Industrial Injection's one-year / unlimited-mile warranty

Sold individually. For best results at this power level, a dual CP3 fuel pump setup is recommended to ensure adequate fuel supply.