Recmar MerCruiser QSD 2.0L Diesel Thermostat 83C 879150054
REC879150054
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Recmar MerCruiser 879150054 Thermostat
83°C replacement thermostat for Cummins MerCruiser QSD 2.0L diesel engines
RECMAR aftermarket thermostat replacing Mercury/MerCruiser 879150054. The verified application is the Cummins MerCruiser Diesel QSD 2.0-litre inline-four family in 115–170 HP ratings, not a general Volvo Penta petrol-engine thermostat.
Key Features
- Aftermarket RECMAR replacement; not genuine Mercury/MerCruiser
- 83°C nominal opening temperature
- For QSD 2.0L inline-four diesel cooling systems
- Covers selected EI and ES 115–170 HP variants
- Direct reference replacement for 879150054
- One thermostat supplied
Technical Specs
| Part type | Diesel engine thermostat |
| Opening temperature | 83°C nominal |
| Engine | Cummins MerCruiser Diesel QSD 2.0L inline-four |
| Power range | 115–170 HP, variant dependent |
| 4Boats SKU | REC879150054 |
Compatibility / Fitment Guide
| Engine family | Verified application | Important notes |
|---|---|---|
| QSD 2.0 EI 115 / ES 130 / EI 130 | Applications listing 879150054 | Confirm the engine identification plate |
| QSD 2.0 EI 150 / ES 150 | Applications listing 879150054 | Check the cooling-system diagram |
| QSD 2.0 EI 170 / ES 170 | Applications listing 879150054 | OEM-number match required |
| Volvo Penta petrol engines | Not the verified application | The old product title was incorrect |
| QSD 2.8L / 4.2L | Do not assume compatibility | Use the thermostat specified for the exact QSD family |
Before ordering: Match the complete engine designation (QSD 2.0 EI/ES and output) and OEM reference 879150054.
Part Number Cross Reference
| Mercury / MerCruiser OEM | 879150054 |
| RECMAR / 4Boats | REC879150054 |
| Engine family | Cummins MerCruiser Diesel QSD 2.0L |
Frequently Asked Questions
Is this a Volvo Penta thermostat?
The verified application is MerCruiser/Cummins QSD 2.0L diesel; do not use the previous Volvo wording.
Which power ratings are covered?
Selected 115, 130, 150 and 170 HP QSD 2.0 variants that list this OEM number.
Is it genuine MerCruiser?
No. It is a RECMAR aftermarket replacement.
What is the temperature rating?
83°C nominal.
Installation note: Work only on a cool engine. Clean the housing and seating face, renew disturbed seals where required, follow the manufacturer's torque procedure, then run the engine and check for leaks and correct cooling-water flow.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
