20537914 Cylinder Block | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta cylinder block is an OEM service component used in the Cylinder Block. It is manufactured to the original Volvo Penta dimensional, material and interface requirements for the documented Volvo D7A Stage 1 / Tier 1 industrial diesel application. Technical identification: Standard cylinder block for the D7A-B TA engine; associated parent cylinder reference 20405980. In service, it forms the engine's primary structural casting and provides the machined cylinder, bearing, oil and coolant interfaces. Selection must be confirmed by OEM part number 20537914, the exact model/product number, serial number and installed assembly configuration.

🚤 Compatibility

Typically suits:

• Volvo Penta TD720GE
• Volvo Penta TD720VE PP
• Volvo Penta D7A-B TA
• Volvo Penta D7A-T
• Volvo Penta D7A-TA
• Volvo Penta D7C-B TA
• Volvo Penta D7C-TA
• Volvo Penta TAD720GE
• Volvo Penta TAD720VE
• Volvo Penta TAD721VE

• Engine Family: TD, D, TAD
• Serial Range: Delivered with cylinder liner., SN780661-

⚙️ Key Features

• Genuine Volvo Penta OEM cylinder block
• OEM part number 20537914
• Technical distinction: Standard cylinder block for the D7A-B TA engine; associated parent cylinder reference 20405980
• Measure all critical bores and deck interfaces, clean every oil/coolant gallery and follow the specified tightening sequence and bearing/liner procedure.

🔌 Function

Forms the engine's primary structural casting and provides the machined cylinder, bearing, oil and coolant interfaces. Measure all critical bores and deck interfaces, clean every oil/coolant gallery and follow the specified tightening sequence and bearing/liner procedure.

⚠️ Common Signs of Failure

• Coolant entering oil, oil entering coolant or unexplained fluid loss
• Low compression or combustion leakage between cylinders/coolant passages
• Cracking, corrosion or erosion around deck and liner locations
• Main-bearing, camshaft or liner-bore wear outside specification
• External leakage or repeated gasket failure from distorted faces

🛠️ Service Notes

• Treat this as a machining and assembly job rather than a bolt-on part: measure the bores, main bearing bores and deck and work through the checks the workshop manual specifies for your engine before building
• Wash the block out thoroughly and blow every oil and coolant gallery through before assembly — a new block still carries machining debris and preservative
• Check that liners, dowels, core plugs and gallery plugs required by the build are present, correctly fitted and properly sealed
• Use new fasteners wherever the manual specifies them, and follow its tightening stages and sequence exactly for the main bearings and the cylinder head
• Confirm the block is the correct one for your engine's designation and serial number before any machining is started, and protect the finished faces from corrosion until assembly

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20537914 → Supersedes 20405980

OEM / Related Numbers

• 20405980 earlier number superseded by this part

📦 Condition

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