Genuine Specification Engine Oil Filter Housing & Cooler – OM651 Diesel Engine

Genuine Mercedes-Benz specification oil filter housing with integrated oil cooler for the OM651 2.1L 4-cylinder diesel engine family. This is a complete assembly that combines the oil filter mounting base with an integrated oil cooler, serving as a critical component of the engine’s lubrication system.

The oil cooler filter housing is responsible for the airtight connection of oil channels between the engine block, the oil filter, and the oil cooler. It ensures proper oil flow, effective cooling, and the safe operation of the diesel power unit. A correctly functioning component minimizes the risk of pressure drops, leaks, and localized overheating, which directly impacts the durability of the bearings, turbocharger, and other oil-lubricated components.

• Type: Oil filter housing with integrated oil cooler

• Engine: OM651 2.1L 4-Cylinder Diesel

• Function: Mounting base for oil filter and oil cooler

• Cooling Type: Water-cooled

• Material: High-strength aluminium alloy

• Condition: New / OEM Specification

⚠️ Critical Note: This is a complete assembly that combines both the oil filter housing and the oil cooler into one unit. It is not a serviceable part that can be disassembled – if the cooler fails or the housing develops leaks, the entire assembly must be replaced. The part fits OM651 diesel engines and is also used in applications by Dodge, Jeep, and Smart.

---

Application & Engine Fitment

This oil filter housing and cooler assembly is designed for the OM651 series 2.1L 4-cylinder diesel engines, available in various power outputs from 95 hp to 204 hp.

Primary Engine Applications:

---

Comprehensive Model Fitment:

Also Fits (Cross-Brand Applications):

⚠️ Important: This assembly is compatible with vehicles that have factory-installed part numbers A6511800610, A6511801310, or 651180131028. Always verify the exact part number by VIN (17-digit chassis number) before ordering.

---

Service Life & Change Intervals (Technical Data)

Standard Recommended Interval:

• 100,000 – 150,000 km under normal driving conditions

• Replacement is typically required when the housing develops leaks or the integrated cooler fails

Critical Adjustment for Kampala (Severe Operating Conditions):
The operational climate (ambient temperatures 20°C–40°C), high humidity, stop-and-go urban traffic, and high dust loads classify as “Severe Duty” per MB Work Instructions. Under these conditions, the housing and cooler experience accelerated thermal stress and wear.

Recommended Replacement Interval under East African operating parameters:

• Maximum: 80,000 – 100,000 km

• Heavy urban use (taxis, fleets, daily city driving): 60,000 – 80,000 km recommended

• Commercial vehicles (Sprinter, Vito): 60,000 km recommended due to higher thermal stress and load

Failure Symptoms – When to Replace:

• Oil leaks from the area around the oil filter housing

• Engine oil temperature consistently higher than normal

• Coolant contamination (oil in coolant or coolant in oil – indicates internal cooler failure)

• Reduced oil pressure warning light

• Visible oil residue or dripping from the housing area

• Overheating of the engine under load

⚠️ Important: A failing oil cooler can allow engine oil and coolant to mix, leading to catastrophic engine damage. If you notice milky oil (coolant in oil) or oil in the coolant expansion tank, replace this assembly immediately.

---

Packaging & Pricing (Alps Autoz Kampala)

Complete Service Recommendation:
When replacing the oil filter housing and cooler assembly, replace the following simultaneously:

• Oil filter element (A6511800109)

• Oil cooler seals / gasket kit (A6511801310_DISA – includes O-rings)

• Engine oil (MB 229.52 5W-30 – OM651 engines with DPF require MB 229.52 specification)

• Coolant (MB 325.6 G40 – A0009891808)

---

Technical Notes for the Workshop

• Installation: This is a complete assembly that replaces both the oil filter housing and the integrated oil cooler. Installation requires draining the engine oil and coolant.

• Seal Kit: The assembly requires specific O-rings for installation, including O-ring 21X3.4 (Part No. A0199970545).

• Cooling Type: Water-cooled oil cooler. Ensure proper coolant refill and bleeding after installation.

• Torque Specification: Refer to specific model service manual for housing mounting bolt torque specifications.

• Genuine vs. Aftermarket: Genuine MB A6511801310 is manufactured to OEM specifications. Equivalent aftermarket brands with cross-reference include:

  • Mahle – Available from select suppliers

  • NRF 31822 – Oil Cooler

  • CoolXpert 651180131028

• Storage: Shelf life of 5 years in unopened, sealed packaging. Store in a dry environment away from direct sunlight.

• Compatibility Note: This assembly is designed for OM651 diesel engines only. Do not use on OM642, OM654, or any petrol engines.

---

Alps Autoz – Kampala