20860334 Spring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Oil Cooler / Filter Pressure-Control Spring - Part Number: 20860334

A genuine Volvo Penta calibrated spring used in the oil-cooler and oil-filter housing control-plunger assembly. It provides the preload against the regulating plunger so oil is directed through the correct filter, cooler or bypass path as pressure and oil viscosity change.

Correct selection must be confirmed against the complete Volvo Penta product designation, product number and serial number because neighbouring engine variants can use different dimensions, connections, calibration or serial-controlled revisions.

⚙️ Key Features

• Genuine Volvo Penta Oil Cooler / Filter Pressure-Control Spring - part number 20860334

• Calibrated spring for the oil-housing control valve

• Matched to plunger 20862028, sleeve 20860343 and insert 20862336

• Controls the opening threshold of the oil bypass/regulating circuit

• Maintains stable oil flow during cold starts and hot high-load operation

• Free length and spring rate are critical to oil-pressure behaviour

• Do not stretch, shorten or replace with a visually similar general-purpose spring

• Confirm the complete engine product number and serial number before ordering

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20860334 (current OEM reference)

OEM / Related Numbers:

• 20860334

• VOE20860334

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• D5/D7-series oil-cooler and oil-filter housings

Typically suits:

• Engine models:

• TAD560VE

• TAD561VE

• TAD734GE

• TAD761VE

• TAD762VE

• TAD763VE

• TAD764VE

• TAD765VE

• HP Range: Confirm by exact engine designation and serial number

• Engine Type: D5/D7-series oil-cooler and oil-filter housings

• Year / Serial Range: Production period and serial breaks vary by model

• Application Note: Calibrated pressure-control spring used with plunger 20862028, sleeve 20860343 and insert 20862336.

🔌 Function

The spring biases the control plunger toward its normal position. Oil pressure acts against the plunger, and the balance between hydraulic force and spring load determines when the internal oil passage changes state, protecting the filter and ensuring dependable lubrication while the oil warms.

Common signs of failure:

• Abnormally high or low oil pressure

• Oil filter damage or repeated seal extrusion

• Delayed oil flow through the cooler or filter circuit

• Spring broken, collapsed or permanently shortened

• Plunger fails to return after contamination or varnish buildup

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging