20482742 Exhaust Valve | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Exhaust Valve - Part Number: 20482742

Standard-size exhaust valve for Deutz-derived Volvo Penta D4D/D6D and related TAD engine cylinder heads, with documented Volvo and Deutz cross-reference numbers.

⚙️ Key Features

• OEM valve head, stem length and seat-angle specification

• Maintains combustion sealing and correct intake or exhaust gas flow

• Designed for high-cycle cylinder-head operation and temperature exposure

• Requires valve-guide, seat and spring inspection during installation

• Suitable for professional cylinder-head overhaul

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20791405 → Supersedes 20482742

• 20482742 → Supersedes 20459861

• 20459861 (earlier OEM reference)

OEM / Related Numbers:

• Valve guides, valve springs, retainers and cylinder-head service components

Aftermarket / Verified Equivalents:

• OE Germany: 040520201201

• Deutz: 04254285 / 04283377

• SLP: EXV-742

• SRP: EV-82742

🚤 Compatibility

Commonly used on:

• Cylinder-head valve gear and associated guide/mounting components

Typically suits:

• Engine models:

• D4D; D6D; TAD420VE; TAD520VE; TAD620VE; TAD720VE; TAD721VE; TAD722VE

• HP Range: Approximately 140-300 HP, depending on engine rating

• Engine Type: Deutz-derived four- and six-cylinder turbocharged Volvo Penta diesel

• Year Range: Approximately late 1990s-2000s

🔌 Function

Opens and closes the cylinder-head gas port at the correct point in the engine cycle and seals against the valve seat during compression and combustion.

Common signs of failure:

• Low compression or cylinder leakage through the exhaust valve

• Hard starting, rough running or reduced power

• Burnt, bent, recessed or pitted valve face

• Abnormal valve clearance, exhaust-valve noise or rising exhaust temperature

• Exhaust smoke or poor cylinder performance caused by incomplete valve sealing

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging