Product Details

7420505543 Water Pump Housing

Heavy Duty Replacement for D12 D13 Engines | Models FM, FH, FMX Trucks

7420505543 / 20505543 Engine Cooling Component

In the demanding environment of heavy-duty transport, the cooling system is the lifeline of your engine. The 7420505543 Water Pump Housing is a critical structural component engineered specifically for the Volvo D12 and D13 engine families. This housing provides the precision-machined interface required for optimal coolant flow and pressure maintenance.

Often cross-referenced with part numbers 20505543, 85003269, and 21468471 (also searched as 7420505543 without hyphens), this unit is a direct fit for FM12, FM13, FH12, and FH13 truck models. We supply brand-new, OEM-standard replacements designed to handle extreme thermal cycling without the risk of hairline fractures or surface warping.

Technical Data & Fitment Guide

Part Number	7420505543 / 20505543 / 85003269 / 21468471
Product Name	Water Pump Housing / Coolant Pump Case
Model Compatibility	FM, FH, FMX series (D12, D13 Engines)
Condition	Brand New, OEM Standard Replacement
MOQ	1 Piece
Stock Status	In Stock / Fast Dispatch
Application Area	Engine overhaul, cooling system repair, maintenance
Delivery Methods	DHL, Fedex, EMS, UPS, Air Freight, Sea Freight
Payment Terms	T/T, Western Union, MoneyGram

Six Core Benchmarks for Procurement

Successful fleet operators prioritize long-term reliability over initial price. Our 7420505543 replacement meets professional standards in the following categories:

Quality Factor	Standard Aftermarket	Our OEM-Standard Housing
Casting Quality	Vulnerable to porosity	High-density virgin alloy casting
Machining Tolerance	+/- 0.5mm (May leak)	+/- 0.02mm (Perfect Seal)
Internal Flow Path	Rough surfaces (Turbulence)	Smooth-bore hydraulic optimization
Thermal Stability	Expands unevenly	Controlled thermal expansion coefficient
Installation Effort	Gasket alignment issues	Drop-in replacement (Bolt-on)
Corrosion Shield	Bare metal	Industrial-grade anti-oxidation coating

Check Real-time Inventory & Photos on Facebook

Maintenance FAQ: Troubleshooting 7420505543 Issues

Q: Why is my D13 engine leaking coolant even after a new water pump install?
A: The Water Pump Housing (20505543) itself might have internal pitting or a warped mating surface. If the housing face isn't perfectly flat, the new pump gasket will fail prematurely. Always inspect the housing during a pump swap.

Q: Is 7420505543 compatible with older FH12 models?
A: It is primarily used on the D12 and D13 blocks. While it fits many 12L configurations, check the casting number on your old unit. This part replaces 85003269 and 21468471 efficiently.

Q: Why Choose This Water Pump Housing?
A: Our units feature an OEM-standard tri-metal structure. We are trusted by repair shops and equipment fleets for providing parts that withstand high-pressure cooling system requirements.

Not sure how this issue affects your equipment?

Our technical team supports operators by providing:

Identify potential risks during routine cooling system inspections.
Recommend suitable replacement parts based on engine series and serial numbers.
Support both inspection advice and global parts supply for fast logistics.

Click below to send your part number for immediate verification.

Send Your Part Number

Industrial Diesel Engine Solutions & Spare Parts

We are a professional supplier focused on diesel engine longevity for brands like Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our inventory is optimized for heavy machinery and commercial vehicle maintenance.

Core Spare Parts Inventory: Cylinder Liners, Pistons, Piston Rings, Main Bearings, Con-rod Bearings, Thrust Washers, Overhaul Gasket Kits, Fuel Injection Pumps, Injectors, Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.

7420505543 water pump housing price Volvo FH13 cooling system overhaul D13 engine water pump case replacement Cummins engine rebuild kits wholesale Komatsu excavator engine maintenance parts Caterpillar C15 C13 engine spares Isuzu 6HK1 engine gasket set Kubota V3800 diesel engine components Yanmar marine diesel engine repair Weichai engine cylinder head assembly Heavy duty truck turbocharger supplier Diesel fuel injector nozzle replacement Engine crankshaft for construction equipment Industrial oil pump for generator sets Piston and liner kit for FH trucks Con-rod bearing for D12 engine Thrust washer for heavy duty overhaul Aftermarket water pump for FM series Mechanical fuel pump for Weichai Precision engine parts for international trade

Message

Please enter your name.

Please enter a valid email address.

Please enter your phone number.

Please select your locality.

Please select your purpose.

Please enter your message.