MerCruiser 6-Pipe Thermostat Housing Kit 87290A23 16413A3 16413A9 V6 V8 5.0 5.7
RM87290A23
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- 30 Day Return Policy
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MerCruiser 6-Pipe Thermostat Housing Kit
Premium Replacement for SKU: 87290A23
Maintain optimal engine temperature and prevent overheating with this premium 6-pipe thermostat housing kit. Specifically designed for MerCruiser V6 and V8 engines, this kit is an essential replacement for corroded or cracked factory housings. It features the 6-hose connection bypass configuration typical of 1980s and 1990s small-block marine engines.
Key Features
- ✔ Direct fit replacement for 6-hose setups
- ✔ High-grade cast iron/alloy construction
- ✔ Precision engineered for GM small blocks
- ✔ Compatible with 90° mounting bolt holes
Technical Specs
| Configuration: | 6-Pipe (Hose Ports) |
| Mounting Angle: | 90° to Crankshaft |
| Material: | Cast Alloy/Iron |
| System Type: | Bypass Style |
Compatibility / Fitment Guide
| Engine Series | Model/Application | Notes |
|---|---|---|
| MerCruiser V6 | 4.3L (262 CID) GM | 90-degree mounting holes |
| MerCruiser V8 | 5.0L (305 CID) GM | Small block applications |
| MerCruiser V8 | 5.7L (350 CID) GM | Including 350 Mag |
| MerCruiser MCM | 1983 - 1990+ Era Engines | Verify 6-hose count |
OEM Cross Reference
| MerCruiser OEM: | 87290A23, 87290A26, 16413A3, 16413A9 |
| GLM Marine: | 13231 |
| Sierra Marine: | 18-1989 (Verify configuration) |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance.
How do I know if it is compatible?
We recommend checking the SKU/MPN and Cross Reference list provided above. This kit is specifically for engines where the intake manifold mounting holes are at a 90-degree angle to the crankshaft centerline and use a 6-hose system.
Will this fit my MerCruiser 7.4L (454) or 502 engine?
No, this kit (87290A23) is specifically for V6 and small-block V8 GM engines. Big-block engines like the 7.4L/502 typically use a different housing with 80-degree offset mounting holes (often SKU 90736A24).
Note: Please verify your original part number and count your hose connections against the technical specifications above before purchasing.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
