Key Overview of Donaldson P550937 Fuel Filter
The Donaldson P550937 fuel filter is a premium Twist&Drain™ water separator, engineered to directly replace KOMATSU 6003114510. It combines dual media filtration with efficient water separation, protecting diesel engines from both contaminants and water intrusion. Additionally, it adheres to SAE J1985 test standards, ensuring consistent performance in heavy-duty industrial and construction environments. Furthermore, its spin-on style and user-friendly design make it a practical choice for fleets, repair shops, and equipment operators worldwide.
Donaldson, a leader in filtration technology, designs the P550937 with its exclusive Twist&Drain™ brand feature. This innovative design simplifies water removal, reducing maintenance time and minimizing equipment downtime. Importantly, the filter is explicitly not for marine applications, so it is perfectly suited for land-based heavy machinery like Komatsu, Mitsubishi, and SDMO equipment.
Unlike generic spin-on filters, the P550937 uses a combination of cellulose and meltblown media. This dual-media setup delivers superior filtration precision, while its robust construction ensures durability in harsh operating conditions. It also fits dozens of high-demand Komatsu models, along with select Mitsubishi and SDMO equipment, expanding its utility for mixed fleets.
Filtration & Water Separation Performance
The Donaldson P550937 delivers 99% filtration efficiency for 10-micron contaminants, trapping fine dirt, metal debris, and sediment in diesel fuel. This precision ensures no unfiltered fuel reaches critical engine components like injectors and fuel pumps. Additionally, it achieves 95% efficiency for emulsified water removal, stopping water from causing corrosion and costly engine damage.
Its dual media type—cellulose and meltblown—works together to enhance filtration performance. Cellulose captures larger particles, while meltblown media traps finer contaminants that generic filters often miss. Moreover, the filter’s adherence to SAE J1985 standards guarantees consistent performance, meeting the strict requirements of heavy-duty diesel engines.
Consequently, the P550937 minimizes unplanned downtime, a top priority for equipment operators. It keeps Komatsu, Mitsubishi, and SDMO machinery running smoothly, making it a valuable asset for businesses relying on consistent performance and reduced maintenance costs.
Precise Dimensional & Physical Specifications
The Donaldson P550937 features OEM-calibrated dimensions to ensure a perfect fit for KOMATSU 6003114510 and compatible equipment. Its outer diameter is 118.4 mm (4.66 inch), and its length measures 311 mm (12.24 inch), optimized for Komatsu’s engine compartments.
It also boasts a thread size of 1 1/4-12 UN, ensuring secure installation with the fuel filter housing. The gasket OD is 110 mm (4.33 inch), while the gasket ID is 98 mm (3.86 inch), creating a tight, leak-proof seal against contaminants and water intrusion. Furthermore, its spin-on style allows for quick, tool-free replacement, reducing maintenance time.
Additionally, the filter weighs approximately 400.2 grams, balancing durability with ease of handling during installation. Its compact yet robust design suits a wide range of heavy machinery, from Komatsu excavators to Mitsubishi industrial engines.
Extensive Cross-Reference Part Numbers
The Donaldson P550937 is compatible with a wide range of cross-reference part numbers, simplifying inventory management for repair shops. These include Baldwin BF 1288-O, Baldwin BF 1357, and Carquest 86942—all high-search-volume replacement parts.
Other key cross-references include Carquest 96267, Fleetguard FS 19946, and HIFI-FILTER SN 40820, expanding its visibility in searches for multi-brand fuel filter replacements. It is also a direct replacement for KOMATSU 6003114510 and KOMATSU 6003114540, two high-demand OEM numbers that drive significant search traffic.
Moreover, it matches Luber-Finer LFF 5357, VMC FS550937, and Wix 33942, making it a versatile replacement option for fleets using mixed equipment brands. This extensive cross-compatibility also enhances its Google ranking potential for users searching by alternative part numbers.
P550937 fuel filter Multi-Brand Equipment Compatibility
The Donaldson P550937 is primarily designed as a replacement for KOMATSU 6003114510, fitting dozens of high-demand Komatsu models. These include BR 580 JG-1D, 155 AX-6D, 65 PX/EX 15GD, and 705 A-4AHD, along with HD series models like 325-7RHD, 405-7HD, and 785-7HD.
It also fits other Komatsu models such as 787-7HM, 300-1HM, 400-7 LCPC, 450-7 LC ECOS, and various WA series wheel loaders like 450-6WA and 500-7WA. Beyond Komatsu, it is compatible with Mitsubishi S 12 R-F1TAW2 and SDMO T 1650, expanding its utility for mixed fleets.
Notably, the filter is marked with a key note: it is not for marine applications. This clarity helps users avoid incorrect installation, ensuring optimal performance for land-based heavy machinery.
Durability & Heavy-Duty Performance
The Donaldson P550937 is built for heavy-duty reliability, with a robust spin-on design that resists physical damage and engine vibration. Its dual media (cellulose and meltblown) resists clogging, delivering consistent filtration and water separation over its service life.
Unlike low-quality aftermarket filters, it maintains structural integrity in extreme temperatures and harsh operating conditions. Its Twist&Drain™ feature simplifies water removal, reducing maintenance time and ensuring the filter operates at peak efficiency. Additionally, its adherence to SAE J1985 standards guarantees it meets the strict performance requirements of heavy-duty diesel engines.
Furthermore, its OEM-compatible design ensures seamless integration with Komatsu, Mitsubishi, and SDMO equipment, preventing fuel leaks and maximizing engine protection. This reliability addresses user concerns about filter performance, improving click-through rates from Google search results.
Donaldson P550937 filter Detailed Technical Specifications
Model: Donaldson P550937 Fuel Filter
Primary Application: KOMATSU 6003114510, Multi-Brand Heavy Machinery
Type: Water Separator
Style: Spin-On
Brand: Twist&Drain™
Media Type: Cellulose, Meltblown
Filtration Efficiency: 99% at 10 Micron
Emulsified H2O Efficiency: 95 Percent
Efficiency Test Standard: SAE J1985
Outer Diameter: 118.4 mm (4.66 inch)
Thread Size: 1 1/4-12 UN
Length: 311 mm (12.24 inch)
Gasket OD: 110 mm (4.33 inch)
Gasket ID: 98 mm (3.86 inch)
Weight: 400.2 grams
Notes: Not for Marine Applications
Cross-Reference Part Numbers: BALDWIN BF 1288-O, BALDWIN BF 1357, CARQUEST 86942, CARQUEST 96267, FLEETGUARD FS 19946, FRAM PS 11341, HIFI-FILTER SN 40820, KOMATSU 6003114510, KOMATSU 6003114540, KOMATSU 6003194500, KOMATSU 6003194540, LUBER-FINER LFF 5357, VMC FS550937, WIX 33942
Compatible Brands & Models: KOMATSU (BR 580 JG-1D, 155 AX-6D, 65 PX/EX 15GD, 705 A-4AHD, 325-7RHD, 405-7HD, 465-7HD, 605-7HD, 785-7HD, 787-7HM, 300-1HM, 300-2HM, 300-3HM, 300-5HM, 300-5E0HM, 350-2HM, 400-2HM, 400-3 RPC, 400-7 LCPC, 450-7 LC ECOS, 6 D 140E-5WA, 450-6WA, 470-6WA, 470-7WA, 480-5WA, 480-5 HWA, 480-6WA, 500-6WA, 500-7WA, 600-6WA, 800-3EO); MITSUBISHI (S 12 R-F1TAW2); SDMO (T 1650)
Why Choose Donaldson P550937 Fuel Filter?
Choosing the Donaldson P550937 fuel filter ensures superior dual protection for diesel fuel systems, addressing the top search intent of users seeking both filtration and water separation. Its 99% filtration efficiency at 10 microns traps nearly all harmful contaminants, while its 95% emulsified water efficiency eliminates water-induced corrosion.
Moreover, its exclusive Twist&Drain™ brand design simplifies maintenance, reducing downtime and labor costs. As a Donaldson-engineered filter, it meets strict quality standards for performance and fit, building trust with users. Its extensive cross-compatibility and multi-brand fit make it a versatile solution, while its clear “Not for Marine Applications” note prevents incorrect use. For operators relying on Komatsu, Mitsubishi, or SDMO equipment, the P550937 is therefore the trusted choice for reliable fuel filtration and water separation.
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