Volvo Penta - Charge Air Cooler Thermostat Kit - 3588437
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
The Volvo Penta 3588437 is a genuine OEM charge air cooler thermostat kit used on select Volvo Penta D4 and D6 marine diesel engines. This kit services the thermostat located in the charge air cooler / intercooler housing, helping regulate cooling flow through the charge-air cooling circuit. It is used where the Volvo Penta parts diagram specifically calls for 3588437 and includes the related sealing O-rings needed to reseal the housing during service.
Key Features
- Genuine Volvo Penta OEM thermostat kit
- Volvo Penta part number: 3588437
- Used in select D4 and D6 charge air cooler / intercooler assemblies
- Factory thermostat opening temperature: 82°C / 180°F
- Helps regulate charge-air cooling temperature through the intercooler circuit
- Includes thermostat and related sealing O-rings for service
- Correct replacement where the Volvo Penta diagram calls for 3588437
Engine Compatibility
Common Volvo Penta applications associated with thermostat kit 3588437 include:
Volvo Penta D4 Series
- D4-180
- D4-225
- D4-260
- D4-300
Volvo Penta D6 Series
- D6-280
- D6-310
- D6-370
- D6-435
Serial Number Fitment Notice
Confirm fitment by Volvo Penta engine model, serial number, and the correct charge air cooler / intercooler parts diagram. D4 and D6 engines have multiple production versions, and thermostat kits may vary by cooler housing, temperature rating, and sealing arrangement. Use 3588437 only where the diagram specifically calls for this kit.
When This Part Needs Replacement
Replace this kit if the charge air cooler thermostat is stuck open, stuck closed, corroded, damaged, or being removed during cooler service. It should also be replaced if the engine is showing cooling-system temperature irregularities related to the charge-air cooler circuit, or whenever the thermostat housing is opened and the seals are disturbed.
Installation Notes
Drain and isolate the related cooling circuit as required before opening the thermostat housing. Clean the sealing surfaces carefully and replace the O-rings included in the kit during reassembly. Inspect the charge air cooler housing, thermostat bore, cover, fasteners, and nearby hoses while the assembly is apart. Follow the Volvo Penta service manual for the correct installation direction, assembly sequence, and torque specifications for the exact D4 or D6 model.
Kit Contents
- Volvo Penta 3583827 thermostat element
- Volvo Penta 3583830 O-ring
- Volvo Penta 3583831 O-ring
- Volvo Penta 3583832 O-ring
Alternate/Superseded Part Numbers
- Current Volvo Penta Kit Part Number: 3588437
- Included Component References: 3583827, 3583830, 3583831, 3583832
Parts Desk Insight
Charge air cooler thermostat service is different from the main engine coolant thermostat. This kit is specific to the intercooler / charge-air cooling circuit, so matching the correct Volvo Penta diagram matters. Using the wrong temperature rating or seal set can create cooling issues or leaks after reassembly.
Special Order: This product is not currently in store inventory but may be available from the Manufacturer. Special Orders may take up to 2 weeks to arrive. Call the parts desk before ordering if you need a closer estimate on delivery time.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.