876305 Thermostat Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 62 degree C thermostat kit weighing 0.086 kg and listed for 41 applications across the AQ, BB, DP, SP, MS and SHIELD series. The accessories catalogue prints it as the thermostat for the AQ225 to BB261 group, the AQ231 to BB231 group and the 500, 501, 570, 571, 572 and 740 range, alongside oil filter 835440, the 31 mm and 51 mm impeller kits and the 4 pack of plugs 3851861. It supersedes part number 875794. The opening temperature is the identifying detail, since thermostats are matched to the engine's designed running temperature and are not interchangeable across ratings.

🚤 Compatibility

• Engine Family: AQ, BB, DP, SP, MS, S

Full model list at the end of this description.

⚙️ Key Features

• 62 degree C opening temperature
• Listed for the AQ225 to BB261 group, the AQ231 to BB231 group and the 500 to 740 range
• Supersedes 875794
• 0.086 kg
• 41 applications across six series
• Thermostat
• Genuine Volvo Penta Part, designed and manufactured to ensure original fit, safety and performance
• Role: Thermostat
• Fits: AQ225, AQ255, AQ260, BB225, BB260, BB261; AQ231, AQ271, AQ280, AQ290, AQ311, BB231; 500, 501, 570, 571, 572, 740

🔌 Function

Holds coolant in the engine until it reaches 62 degrees C, then opens to circulate it and hold the running temperature steady.

⚠️ Common Signs of Failure

• Engine slow to warm or never reaching normal temperature
• Overheating soon after start-up with a cold hose downstream
• Temperature gauge swinging up and down in use
• Thermostat found stuck open or closed, or its frame corroded

🛠️ Service Notes

• Confirm the engine calls for the 62 degree C rating - fitting a different opening temperature changes how the engine runs
• Test the old unit in hot water before condemning the rest of the cooling system, and renew the housing seal when fitting
• Always refer to the operator's manual for the recommended maintenance and service intervals for your engine and drive
• Listed against more than one engine or drive family - check the qualifier that applies to your own engine or drive

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 876305 → Supersedes 875794

OEM / Related Numbers

• 875794 earlier number superseded by this part

Other-Brand OEM Numbers

• Mercury Marine: 18323

Aftermarket / Verified Equivalents

• Recmar: REC876305
• Sierra: 18-3662
• GLM: 13381

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 740B, 500A, 501A, 501B, 570A, 572A, 740A, 430A, 430B, 431A, 431B, 432A, 434A, 570, 500B, 571A, 430
• Volvo Penta DP-C, DP-C1, DP-D, DP-D1, DP-A, DP-A2
• Volvo Penta AQ271A, AQ271C, AQ271B, AQ271D
• Volvo Penta SP-C, SP-A2, SP-C1
• Volvo Penta AQ231A, AQ231B
• Volvo Penta AQ311A, AQ311B
• Volvo Penta AQ205A
• Volvo Penta AQ211A
• Volvo Penta BB231A
• Volvo Penta BB261A
• Volvo Penta BB740A
• Volvo Penta MS4B
• Volvo Penta Shield for 740A