OE Cross-Reference (verify before ordering)
Confirm the OE number stamped on your existing cooler and cross-check fitment by engine variant and year before ordering — Volvo uses several superseding numbers across the D11/D13/D16 family.
| SUMEC Part | Representative OE | Application |
|---|
| BN-8113 | 20700516 (supersedes 20742946) | D13/D16, FH/FM |
| BN-8171 | 22439157 | D11/D13 |
| BN-8199 | 20810985 | D13A/D13C |
For other Volvo oil-cooler OE numbers (11110220, 20749399, 21359570, 8170816 and more), use the OE lookup to find the matching SUMEC part. Always verify the OE number against your engine before purchase.
Step-by-Step Replacement Procedure
1. Prepare the vehicle
Park on level ground, allow the engine to cool fully, and disconnect the battery negative terminal. Working on a hot cooling system risks burns and inaccurate fluid levels.
2. Drain coolant and oil
Drain the engine coolant into a clean pan (it can be reused only if clean and uncontaminated). Drain the engine oil — if the oil is milky or the coolant is oily, both circuits are contaminated and must be fully flushed.
3. Access and remove the oil cooler
Remove the components obstructing access to the cooler housing (typically on the side of the block). Disconnect the coolant lines and unbolt the oil cooler / cooler housing. Note the orientation and gasket positions before removal.
4. Clean the mating surfaces
Thoroughly clean the housing and block mating surfaces of all old gasket material and debris. Any residue here causes a repeat leak. Inspect the housing for warping or cracks.
5. Install the new cooler
Fit the new oil cooler with new gaskets and O-rings. Tighten fasteners evenly in the correct sequence to the manufacturer's specified torque using a calibrated torque wrench — do not overtighten.
6. Refill and bleed
Refill with fresh oil and a new filter, and refill the cooling system with the correct coolant. Bleed the cooling system per Volvo procedure to remove air pockets, which otherwise cause hot spots and false overheating.
7. Flush if cross-contaminated
If oil and coolant had mixed, flush both circuits completely before returning the truck to service — residual contaminated fluid will damage bearings (oil side) or the cooling system.
Frequently Asked Questions
Can a Volvo D13 oil cooler be repaired instead of replaced?
No. An internally cracked or perforated oil cooler cannot be reliably repaired and must be replaced. External cleaning of coolant passages does not fix an internal oil-to-coolant leak.
Do I need to flush the engine when replacing the oil cooler?
If oil and coolant had cross-contaminated (milky oil or oily coolant), yes — flush both circuits completely before returning to service. Residual contaminated fluid damages bearings on the oil side and fouls the cooling system.
How do I find the right OE number for my Volvo oil cooler?
Confirm the OE number stamped on your existing cooler and cross-check fitment by engine variant (D11/D13/D16) and year. Volvo uses several superseding numbers, so verify against your engine rather than relying on the model name alone.
Should I replace gaskets and seals when fitting a new oil cooler?
Always. Reusing old gaskets or O-rings is a common cause of repeat leaks. Use a full new seal set and clean all mating surfaces of old gasket material before installing the new cooler.
What coolant and torque should I use?
Use the correct Volvo-specification coolant and tighten fasteners evenly in sequence to the manufacturer's specified torque with a calibrated wrench. Bleed the cooling system afterward to remove air pockets.
OE Cross-Reference & Trade Supplement
Supplement by the SUMEC Cooling Parts engineering team · Updated 13 June 2026
One distinction worth a minute before ordering: a failing oil cooler on a D-series typically shows oil-in-coolant emulsion or oil pressure loss, while disappearing coolant with white smoke points at the EGR cooler — a different part (see the elimination steps). The oil cooler references below cover D10 through D16; match by the number on the old unit.
Number not listed? OE lookup. Trade buyers: send OE number(s) and quantity via the quote form — fitment confirmed before quoting.