Fuel Filter 1R-0749 High Efficiency Secondary Filter for CAT Engines
1R-0749 fuel filter for Caterpillar C13, C15, C18, 3406E and more. OEM cross-reference verified. Bulk and OEM orders welcome from IXIN Filter.
Description
This 1R-0749 fuel filter is a high-efficiency secondary fuel filter engineered as a direct replacement for the Caterpillar 1R-0749, one of the most widely used fuel filters across Cat’s on-highway, off-highway, and industrial diesel engine lineup. It’s built to protect fuel injectors and fuel system components from fine particulate contamination in demanding diesel applications.
Product Overview
The 1R-0749 fuel filter uses cellulose filter media rated for advanced filtration efficiency, designed to capture fine particulate contamination before it reaches sensitive injection system components. It’s manufactured with a standard 1-14 UN spin-on thread to match OEM housing specifications, and each unit is dimensionally verified and tested for filtration performance before shipment — not just matched by part number.
Fits the Following Caterpillar Engines & Equipment
| Category | Engines / Models |
|---|---|
| On-Highway / Industrial Engines | C10, C11, C12, C13, C15, C16, C18, 3176, 3406B, 3406C, 3406E, 3408, 3408B, 3412 |
| Wheel Tractor-Scrapers | CAT 621, 623, 627, 631, 632, 637, 651, 657 (and K-series variants) |
| Excavators | CAT 336E, 336F, 340F, 349E, 349F, 352F, 374F, 375, and related XE/L/LN variants |
| Generators | WEG SR4, SR4B, SR4BHV, XQP500, XQP550 |
Always confirm your engine’s serial number range against the OEM cross-reference before ordering, as fuel system filtration specifications can vary across production years within the same model.
OEM Cross-Reference Numbers
| Brand | Number |
|---|---|
| Caterpillar | 1R-0749, 1R0749 |
| Baldwin | BF7587 |
| Donaldson | P551311 |
| Fleetguard | FF5308, FF5319, FF5473 |
Key Features
- Advanced-efficiency cellulose filter media, designed for fine particulate filtration in the 2-3 micron range
- Standard 1-14 UN spin-on thread to match OEM housing specifications
- Dimensionally verified against OEM specifications, not just cross-reference number matching
- Consistent batch quality control, with raw material and pre-shipment testing on every production run
- Broad application coverage, spanning on-highway trucks, excavators, wheel tractor-scrapers, and generators
Specifications (Publicly Referenced Dimensions)
Dimensions below are compiled from publicly available cross-reference filter databases, including Fuel Filter Cross Reference, and are provided as a reference guide. Please verify against your engine’s actual filter housing or OEM documentation before bulk ordering — production-year variations within the same model can affect exact fitment.
| Spec | Detail |
|---|---|
| Height | 266 mm |
| Outer Diameter | 94 mm |
| Thread | 1-14 UN |
| Filter Type | Secondary spin-on fuel filter |
| Filter Media | Advanced-efficiency cellulose |
| Application | On-highway trucks, excavators, wheel tractor-scrapers, generators |
| Packaging Options | Standard retail box, bulk carton, or private-label packaging available |
Why Source This Fuel Filter from IXIN Filter
We manufacture this 1R-0749 fuel filter in our own production facility, with quality control checkpoints from raw material inspection through final pre-shipment testing. If you’re sourcing for a distribution business or fleet, we can provide:
- Sample units for independent testing before a bulk order
- Documentation on OEM cross-reference verification
- Flexible MOQ and private-label packaging options
- Consistent batch-to-batch quality for repeat orders
Frequently Asked Questions
What engines use the 1R-0749 fuel filter? It’s used across a wide range of Caterpillar engines, including the C13, C15, C18, 3406E, 3408, and 3412, along with several wheel tractor-scraper, excavator, and generator applications.
Is this a genuine Caterpillar filter or an aftermarket replacement? This is a manufactured replacement filter, produced to match OEM 1R-0749 specifications and cross-referenced against major aftermarket brands including Baldwin, Donaldson, and Fleetguard.
Will this fit all the engines and models listed? It fits the applications listed above, but fuel system configurations can vary by production year and serial number range. We recommend confirming your engine’s specific configuration before ordering, especially for bulk purchases.
Do you offer samples before a bulk order? Yes. We recommend requesting a sample for independent testing before committing to a bulk order, especially for first-time buyers.
Ready to order or request a sample? Contact IXIN Filter for pricing, MOQ, and lead time on the 1R-0749 fuel filter.
