VolvoEngine Parts

3842015 — Thermostat 3842015 For Volvo Penta Engine D1-13 D1-13B D1-20 D1-20B D1-30 D1-30B D2-40 D2-40B D1-13F D1-20F D1-30F

This is a thermostat that regulates the engine's operating temperature by controlling coolant flow to the radiator. Made with a durable brass and wax pellet assembly, it opens and closes precisely to maintain optimal engine heat, unlike a faulty thermostat stuck open or closed which can cause poor fuel economy or overheating. Operators may notice the engine taking too long to warm up, fluctuating temperature gauges, or the engine running too cool if this thermostat fails.

Thermostat 3842015 For Volvo Penta Engine D1-13 D1-13B D1-20 D1-20B D1-30 D1-30B D2-40 D2-40B D1-13F D1-20F D1-30F – Part No 3842015 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeThermostat
MaterialBrass, Wax Pellet
ApplicationEngine Cooling System
Service LifeReplace every 3,000 hrs or 3 years
CompatibilityVolvo specification
ConditionNew — High Quality Aftermarket

Failure Symptoms

A failing thermostat may cause the engine temperature gauge to read lower than normal or fluctuate erratically. If stuck closed, it can lead to rapid engine overheating, while if stuck open, it results in prolonged engine warm-up and reduced fuel efficiency. Persistent operation outside the optimal temperature range can increase engine wear.

Installation Tip

Ensure the thermostat is installed in the correct orientation, with the spring side facing the engine block, to allow proper coolant flow. Do not force the thermostat into the housing if it does not seat easily.

Service Note

Inspect the coolant hoses and radiator for any signs of leaks or blockages when replacing the thermostat.