Donaldson P551807 Oil Filter | Heavy-Duty Diesel

Donaldson P551807 Heavy-Duty Diesel Oil Filter

The Donaldson P551807 Oil Filter is a heavy-duty, full-flow spin-on engine oil filter designed to help keep engine oil clean and protect critical engine components from wear-causing contaminants. Its large filter element provides substantial contaminant-holding capacity for demanding diesel engine applications.

The P551807 uses cellulose filter media and provides 99% filtration efficiency at 21 microns. Its internal support design helps maintain filter element integrity during cold-oil conditions, while the heavy-duty construction is designed for reliable performance across demanding operating conditions. citeturn0search1turn0search4

This filter is used across a wide range of heavy-duty truck, diesel engine, construction, industrial, and off-highway applications. Published applications include qualifying Mack, Volvo, Caterpillar, Cummins, Freightliner, Peterbilt, Kenworth, and Ford applications. Always verify the engine, vehicle, OEM part number, or existing filter before ordering. citeturn0search1turn0search2

Key Features

• Donaldson P551807 heavy-duty oil filter
• Full-flow engine oil filtration
• Spin-on filter design
• 99% efficiency at 21 microns
• Cellulose filter media
• Large internal filter element volume
• Helps capture soot and abrasive contaminants
• Helps protect engine components from wear
• Designed for demanding diesel applications
• Heavy-duty construction for reliable service

Specifications

• Brand: Donaldson
• Part Number: P551807
• Product Type: Engine Oil Filter
• Filter Type: Full-Flow
• Filter Style: Spin-On
• Media Type: Cellulose
• Filtration Efficiency: 99% at 21 Microns
• Outer Diameter: 4.25 in
• Height: 10.31 in
• Thread Size: 1-1/8-16 UN
• Gasket ID: 3.54 in
• Gasket OD: 3.90 in
• Condition: New

Common Applications

The Donaldson P551807 is used in a broad range of heavy-duty diesel and equipment applications. Published application information includes:

• Mack MP7, MP8 and MP10 engines
• Volvo diesel engine applications
• Caterpillar engine applications
• Cummins engine applications
• Freightliner applications
• Peterbilt applications
• Kenworth applications
• Ford F-650 and F-750 applications
• Construction and earthmoving equipment
• Industrial and off-highway equipment
• Fleet and commercial truck applications

Donaldson's published truck filtration guide specifically lists P551807 as a full-flow lube spin-on filter for qualifying Mack MP7, MP8 and MP10 applications, while other application data identifies numerous additional truck and equipment applications. citeturn0search22turn0search1

Cross Reference Part Numbers

Published cross-reference numbers for Donaldson P551807 include:

• Caterpillar: 1R1807
• Cummins: LF3973, LF17503
• Fleetguard: LF3973, LF587
• Baldwin: B7700, B7600, B7225
• WIX: 57791
• Fram: PH9376
• Luber-Finer: LFP3236
• Mack: 20539275, 21707136, 21939298, 485GB3236
• Volvo: 21707136, 478736, 85113942, 85114049
• NAPA: 1788, 1791, 7791
• Hengst: H362W
• Premium Guard: HG50097

Cross-reference numbers are provided for identification purposes. Always verify the exact engine and filter application before ordering, as an interchange number does not by itself guarantee fitment. citeturn0search0turn0search1

Why Replace Your Engine Oil Filter?

Engine oil carries contaminants produced during normal diesel engine operation. Over time, soot, dirt, metal particles, and other contaminants can accumulate in the lubricant. A properly maintained oil filter helps remove these contaminants before they circulate through critical engine components.

Replacing the oil filter at the recommended service interval helps maintain oil cleanliness and supports proper lubrication and engine protection.

Why Choose Donaldson P551807?

The Donaldson P551807 combines a full-flow spin-on design with heavy-duty construction and 21-micron filtration efficiency. Its broad application range makes it a practical replacement filter for qualifying commercial trucks, diesel engines, construction equipment, and other demanding applications. citeturn0search2turn0search5