Recmar MerCruiser V6 V8 Thermostat Retaining Sleeve 23-806922
REC23-806922
- Dispatched in 2-3 days
- 30 Day Return Policy
- Low stock - 3 items left
- Backordered, shipping soon
MerCruiser Thermostat Retaining Sleeve
Replaces 23-806922 | Design No. 2 & No. 3 Housings
Aftermarket retaining sleeve used inside compatible MerCruiser V6 and V8 thermostat housings. The sleeve locates and retains the thermostat; it does not regulate temperature and is not a complete thermostat kit.
Key Features
- Thermostat retaining sleeve, not a thermostat
- For compatible MerCruiser V6/V8 housings
- Design No. 2 and No. 3 application family
- Replaces obsolete 23-806922 family references
- Aftermarket Recmar replacement
Technical Specs
| Part type | Thermostat housing retaining sleeve |
| Engine family | MerCruiser petrol V6/V8 |
| Housing identification | Design No. 2 / Design No. 3 |
| Thermostat included | No |
| 4Boats SKU | REC23-806922 |
Compatibility / Fitment Guide
| Engine / system | Verified application | Fitment notes |
|---|---|---|
| MerCruiser GM V6 | Compatible V6 thermostat housings using retaining sleeve 23-806922 / 23-174951 | Confirm by housing design and the number/shape of the removed sleeve. |
| MerCruiser GM V8 | Compatible small- and big-block V8 housings using the same sleeve reference | Not every V8 housing uses this retainer; inspect the parts diagram. |
| Exclusions | Design No. 1 housings; housings using a different retainer; outboard thermostats | Do not substitute based only on a similar outside diameter. |
Do not order by engine capacity alone. Match the complete Volvo Penta/MerCruiser model suffix, cooling-system type and original part number in the engine parts catalogue.
OEM Cross Reference
| Mercury / MerCruiser | 23-806922 |
| Earlier / related Mercury references | 23-174951; 23-17495 |
| Current supersession | Check current Mercury catalogue; later service references may supersede 806922 |
| 4Boats / Recmar SKU | REC23-806922 |
Cross-reference numbers indicate the application family; this item is a Recmar aftermarket replacement, not a genuine Volvo Penta, OMC or Mercury/Quicksilver part.
Questions & Answers
Does this sleeve include the thermostat?
No. It is the internal retaining sleeve only.
Which engines use it?
Selected MerCruiser GM V6 and V8 engines with Design No. 2 or No. 3 thermostat housings.
Can I identify fitment by engine year?
Not reliably. Use the engine serial number and thermostat-housing diagram.
Installation note: Allow the engine to cool, inspect the housing and sealing surfaces, and pressure-test/check for leaks after installation. Professional installation is recommended.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
