Description
1R-0750 Fuel Filter for Duramax 6.6L Diesel — High-Capacity Spin-On
The 1R-0750 spin-on fuel filter is the gold standard for Duramax 6.6L diesel fuel filtration. Originally designed as a Caterpillar heavy equipment filter, the 1R-0750 delivers exceptional 5-micron filtration with high flow rates that protect your CP3/CP4 injection pump from water and particulate damage. This filter is compatible with 2001-2016 Chevrolet Silverado and GMC Sierra 2500HD/3500HD when used with a refit head adapter (sold separately), and also serves as a direct replacement for Caterpillar D4E, D6HLGP, and 3114 engine applications.
Key Features
-
5-Micron Filtration: Captures 99% of particles down to 5 microns — far superior to standard 10-15 micron filters for injection pump protection.
-
High-Flow Design: Premium filtration media provides excellent flow rates even in cold weather — your Duramax never starves for fuel under load.
-
Broad Compatibility: Cross-references with BF7633 (Baldwin), P551313 (Donaldson), FF5320 (Fleetguard), P8334, LFF3347 — available everywhere.
-
Heavy-Duty Construction: Spin-on canister with 1-14 UNS-2B thread, 85.7mm OD, 181.5mm height — built for industrial durability.
-
Dual Application: Use as secondary filter on Duramax or direct replacement for Caterpillar equipment.
Compatibility
| Application |
Make |
Model |
Engine |
| 2001-2016 |
Chevrolet/GMC |
Silverado/Sierra 2500HD 3500HD |
6.6L Duramax (LB7-LLY-LBZ-LMM-LML) — with refit head |
| — |
Caterpillar |
D4E, D6HLGP |
Diesel Engine |
| — |
Caterpillar |
14H, 3114 |
Diesel Engine (Secondary) |
Specifications
| Specification |
Detail |
| Filter Type |
Spin-On Canister |
| Filtration Rating |
5 Micron Nominal |
| Thread Size |
1-14 UNS-2B |
| Dimensions |
OD 85.7mm x Height 181.5mm |
| Cross-References |
1R0750, BF7633, P551313, P551740, FF5320, P8334, LFF3347, F65213, 33528 |
Why Choose iFJF?
-
Industrial-Grade Filtration: Why trust a consumer-grade filter to protect a $5,000+ injection system? The 1R-0750 is engineered for heavy equipment.
-
Available Everywhere: Cross-references to every major brand — find replacements at any truck stop, farm supply, or auto parts store.
-
Cost-Effective: $15-25 per filter vs. $45-60 for OEM Duramax — change more frequently for better protection.
Frequently Asked Questions
Q: Can I install this on a stock Duramax without modifications?
A: No — the 1R-0750 requires a refit head adapter to replace the OEM filter housing. This filter is a direct fit only with the refit head installed (sold separately).
Q: Will this work on my 2003 LB7 Duramax?
A: Yes, provided you have the 1R-0750 refit head adapter installed. The filter fits all Duramax years (2001-2016) with the adapter.
Q: How does this compare to the OEM AC Delco filter?
A: The 1R-0750 offers 5-micron filtration (vs. 7-10 micron OEM), higher flow rates, significantly lower cost, and wider availability.
Q: How do I prime the system after changing the filter?
A: If your refit head has a primer pump, pump until firm. Otherwise, cycle the key to ON (without starting) 3-4 times to activate the lift pump.
Q: What is the difference between this and the refit head kit?
A: This listing is the filter element only. For the complete conversion kit with filter head, see our kit listing.
Related Products
