20970527 Cylinder Head | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Cylinder Head - Part Number: 20970527

Complete cylinder-head assembly for the Volvo Penta TAD550/TAD551 common-rail engine family. The catalogue identifies the valves, guides, spring hardware, valve cover, oil separator and graded head gaskets used around this head.

⚙️ Key Features

• Manufactured to the original Volvo Penta dimensional and material specification

• Maintains correct fit, alignment and service access

• Designed for diesel-engine heat, vibration and operating load

• Direct replacement for a worn, damaged or missing original component

• Must be matched by part number, engine product and serial/configuration

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20970527 (OEM catalogue reference)

OEM / Related Numbers:

• 20580074 and 20580078 valve-guide references

• 976013 O-ring

• 11700347 valve spring

• 20847155 valve retainer

• 11700345 valve collet

• 20840807 thrust washer

• 20840772 lock ring

• 20758481 inlet valve

• 20755883 exhaust valve

• 21455723 valve cover

• 20972267 valve-cover gasket

• 20840801 gasket

• 20933359 oil separator

• 20970717; 20970720; 20970725 graded cylinder-head gaskets

• 21448926 rocker arm

• 20913851 adjusting screw

Aftermarket / Verified Equivalents:

• Deutz-related cylinder-head reference: 04293366

Assembly / Service Components:

• 20580074 and 20580078 valve-guide references

• 976013 O-ring

• 11700347 valve spring

• 20847155 valve retainer

• 11700345 valve collet

• 20840807 thrust washer

• 20840772 lock ring

• 20758481 inlet valve

• 20755883 exhaust valve

• 21455723 valve cover

• 20972267 valve-cover gasket

• 20840801 gasket

• 20933359 oil separator

• 20970717; 20970720; 20970725 graded cylinder-head gaskets

• 21448926 rocker arm

• 20913851 adjusting screw

🚤 Compatibility

Commonly used on:

• TAD550/TAD551 common-rail cylinder-head assembly

Typically suits:

• Engine models:

• TAD550GE; TAD551GE

• HP Range: Approximately 180-220 HP, depending on generator rating

• Engine Type: 5.7 L six-cylinder common-rail generator diesel

• Year Range: Approximately 2000s-2010s

🔌 Function

Seals the top of the cylinders and carries the valves, injector, valve mechanism and internal coolant/oil passages.

Common signs of failure:

• Low compression, hard starting or persistent misfire

• Coolant or oil leakage at the head joint

• Combustion gas entering the cooling system

• Cracked casting, damaged valve seats or injector bore

• Recurring overheating or head-gasket failure

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging