Product Description
Restore and add flow to your LMM with the INDUSTRIAL INJECTION 0986435520SE-R4 remanufactured common-rail injector, calibrated to approximately 24 LPM for tuned street/working trucks that need reliable fueling under load. Each unit is professionally remanufactured, bench-tested, and balanced for consistent cylinder-to-cylinder delivery on 2007.5–2010 6.6L Duramax LMM engines.
Fitment
- 2007.5–2010 Chevy Silverado 2500/3500 HD — 6.6L Duramax LMM
- 2007.5–2010 GMC Sierra 2500/3500 HD — 6.6L Duramax LMM
- Engine code: LMM (common-rail)
- Replaces/Upgrades Bosch family 0986435520 (LMM) — R4 24 LPM calibration
What’s Included
- (1) Remanufactured LMM injector (0986435520SE-R4)
- New O-rings and sealing washers (installed)
- Flow sheet / test data (when provided by reman line)
Why Choose This Injector
- 24 LPM flow supports tuned towing and light performance builds
- Fully remanufactured with critical wear components replaced
- Balanced and bench-tested for smooth idle and clean emissions readiness (with proper tuning)
Recommended Parts & Related Categories (CPP Internal Links)
- Shop All GM Duramax Parts
- Fuel Injectors & Install Hardware
- CP3 Injection Pumps & Accessories
- Fuel Filtration (protect your new injector)
- 2007.5–2010 LMM Parts Category
Core & Installation Notes
- Core Charge: A refundable core charge may apply. Return your usable LMM injector core following CPP’s core return instructions for credit.
- Install: Always replace sealing washers, torque lines to spec, and perform return rate and balance checks in pairs/sets when diagnosing.
- Tuning: 24 LPM units may require appropriate calibration to maintain optimal smoke control and EGT on modified trucks.
Cross-Reference / Alternatives
- Stock-flow LMM reman injector — for OEM-equivalent output
- Complete set (8) — matched set recommended for higher-mileage engines
- Upgraded CP3 & lift pump — supports stable rail pressure with higher-flow injectors
FAQ
Is this a direct drop-in for LMM?Yes. It’s built for the 2007.5–2010 6.6L Duramax LMM common-rail system. Use new sealing washers and follow OEM torque specs and cleanliness procedures.
Do I need custom tuning for 24 LPM?We recommend appropriate calibration when adding fuel beyond stock, especially with intake/exhaust/turbo mods, to control smoke and EGT and to protect the transmission.
Should I replace one injector or all eight?You can replace a single failed unit, but on high-mileage engines a matched set helps restore balance, starting, and idle quality. At minimum, diagnose in pairs to confirm no additional weak cylinders.
What protects my new injector investment?Fresh fuel filters, clean tank/lines, and a healthy CP3. Consider upgraded filtration and a lift pump to keep rail supply stable under load.
