1543630 Compression Spring | Genuine Volvo Penta Part

🔧 Product Description

This is a genuine Volvo Penta compression spring from the lubricating and oil system group, supplied as an individual component for engine oil circuit assemblies. It provides the calibrated spring force needed to hold a valve or plunger against its seat until system oil pressure overcomes it. It fits the TAMD162, TAMD163, TAMD165, TID162, TD164, TAD1630/1631 and TWD1620/1630 series marine and industrial diesel engines.

🚤 Compatibility

• Engine Family: TWD, TID, TD, TAMD, TAD

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 1543630
• System group: Lubricating and Oil System
• Net weight 0.02 kg
• Fits TAMD162, TAMD163, TAMD165, TID162, TD164, TAD1630/1631 and TWD1620/1630 series diesel engines
• Supplied as a single spring for oil system service and overhaul work
• Engine type: Volvo Penta heavy-duty inline-six diesel engine

🔌 Function

The compression spring applies a preset closing load within an oil system component, allowing it to open only once oil pressure rises above the intended setting. This maintains correct oil pressure regulation and flow control through the lubrication circuit.

⚠️ Common Signs of Failure

• Low or erratic engine oil pressure readings
• Spring fatigue, sagging or loss of free length after long service
• Corrosion, pitting or scaling on the spring coils
• Cracked, broken or collapsed coils found during oil system disassembly
• Noisy or chattering pressure relief operation

🛠️ Service Notes

• Compare the new spring with the one removed for free length and coil condition; a spring that has taken a set or lost length is past its useful life
• Look over the old spring for corrosion pitting, bright rub marks and cracked or broken coil ends, and check whatever it bears against for the same wear
• Never stretch, shorten, grind or heat a spring to alter how it behaves — fit the correct part instead
• Seat the spring squarely in its recess or over its guide with the ends fully home, so it cannot cock over or bind in service
• Where springs work as a group, renew them together so the load stays even across the set

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 1543608 - Oil valve housing
• 949659 - Housing O-ring
• 1543610 - Oil valve peg
• 1543964 - Oil valve seat
• 1543578 - Housing sealing ring
• 945444 - Housing flange screw

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAMD162C-C, TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
• Volvo Penta TID162AG, TID162AGP, TID162AP, TID162APB
• Volvo Penta TAD1630G, TAD1630GE, TAD1630P
• Volvo Penta TAMD165A, TAMD165C, TAMD165P
• Volvo Penta TWD1630G, TWD1630P, TWD1630V
• Volvo Penta TAD1631GE, TAD1631G
• Volvo Penta TAMD163A-A, TAMD163P-A
• Volvo Penta TD164KAE
• Volvo Penta TWD1620G