21415409 Rocker Arm | Genuine Volvo Penta Part

🔧 Product Description

Heavy-duty exhaust-valve rocker arm used in Volvo D16-based engine valve trains, including compatible Volvo Penta TAD16 industrial applications. It pivots on the rocker shaft and transfers camshaft motion through the valve bridge to open the exhaust valves.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD1650VE-B/51VE
• Volvo Penta TAD1643VE-B
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TAD1640VE-B
• Volvo Penta TAD1641VE-B
• Volvo Penta TAD1642VE-B
• Volvo Penta TAD1650GE
• Volvo Penta TAD1651GE
• Volvo Penta TAD1660-62VE
• Volvo Penta TAD1662VE EU5
• Volvo Penta TAD1670-72VE
• Volvo Penta TWD1683VE
• Volvo Penta TAD1640-42VE-C

• Engine Family: TAD, TWD

⚙️ Key Features

• Genuine Volvo / Volvo Penta D16 exhaust rocker arm
• High-load forged and machined valve-train component
• Works with the exhaust valve bridge, shaft and adjustment hardware
• Cross-referenced across Volvo Group D16 applications
• Later rocker references must be checked against engine serial number
• Engine type: Volvo / Volvo Penta 16-litre inline six-cylinder diesel
• Also supersedes Volvo part number 21316394

🔌 Function

Transfers camshaft lift to the exhaust-valve bridge so exhaust valves open at the correct timing and lift.

⚠️ Common Signs of Failure

• Valve-train ticking or knocking
• Excessive valve clearance
• Pitted roller or worn shaft bore
• Cracked rocker or damaged adjustment point
• Cylinder misfire, low compression or poor exhaust-valve operation

🛠️ Service Notes

• Keep the rocker arms in their fitted order if any are being refitted, and check the arms, the shaft or pivot and the pad or roller face for pitting, scoring and uneven wear
• Make sure the oil feed holes and any drilling through the arm are clear and flushed, and prime the contact faces with clean engine oil before assembly
• Confirm the pushrods are seated in their cups and the valve gear is correctly located before pulling the rocker shaft or pedestals down, then tighten evenly in the sequence and to the figures in the manual for your engine
• Set the valve clearances with the engine at the crank position the manual specifies for that cylinder, and recheck them once the pedestal bolts are fully torqued
• Turn the engine over by hand through a complete cycle to confirm nothing binds, and recheck the clearances after the first period of running if the manual requires it

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21415409 → Supersedes 21595700 → Supersedes 21281393 → Supersedes 21132332 → Supersedes 21072069

OEM / Related Numbers

• 21600884 earlier number superseded by this part
• 21595700 earlier number superseded by this part
• 21281393 earlier number superseded by this part
• 21132332 earlier number superseded by this part
• 21072069 earlier number superseded by this part
• 85013775 - recognised Volvo Group cross-references
• 85013058 - recognised Volvo Group cross-references

Aftermarket / Verified Equivalents

• Shri Ram International: RA-075
• Orion Part: 501777
• TualPart: 30301794

📦 Condition

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