21539409 Rocker Arm | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta TAD1180-TAD1183VE Rocker Arm - Part Number: 21539409

A precision rocker arm used in the TAD1180VE through TAD1183VE valve mechanism. Six are installed in the relevant rocker position and each assembly works with an adjusting screw, sealing ring, piston, ball socket and valve bridge.

⚙️ Key Features

• Genuine Volvo Penta TAD11 rocker arm

• Six used in the applicable rocker-arm position

• Precision pivot and valve-contact surfaces

• Includes hydraulic and mechanical adjustment interfaces

• Operates on rocker arm shaft 21539423

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21539409 (current catalogued reference)

OEM / Related Numbers:

• 21539423 - rocker arm shaft

• 60111964 - hexagon nut

• 21430606 - adjusting screw

• 20712279 - sealing ring

• 22034800 - piston

• 21054149 - ball socket

• 944364 - O-ring

• 21411252 - valve bridge

• 21792303 - leaf spring

• 21881494 - intake rocker arm

• 21881195 - fuel-injector rocker arm

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta TAD11 cylinder-head valve mechanisms

Typically suits:

• Engine models:

• TAD1180VE

• TAD1181VE

• TAD1182VE

• TAD1183VE

• HP Range: Engine-rating dependent

• Engine Type: 10.8 L inline-six turbocharged common-rail industrial diesel

• Year Range: Cylinder-head and engine-serial dependent

🔌 Function

Transfers camshaft motion through the adjusting and valve-bridge components to operate the applicable valves.

Common signs of failure:

• Valve-train ticking or knocking

• Incorrect valve clearance

• Worn pivot, piston or ball-socket surfaces

• Reduced cylinder performance

• Scoring or metal debris under the rocker cover

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging