21510857 Insert | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta TAD7 Crankshaft Gear Insert - Part Number: 21510857

A precision insert fitted in the crankshaft and timing-gear assembly of Volvo Penta TAD7 industrial and generating-set engines.

⚙️ Key Features

• Crankshaft and timing-gear location

• Precision-machined locating component

• Maintains gear alignment and drive position

• Used with crankshaft gears 20898072 and 20860794

• Serial-controlled replacement for the corresponding earlier insert position

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• Current OEM reference: 21510857

• Related earlier insert reference: 20459144

OEM / Related Numbers:

• 21510857

• 20459144 - Related earlier insert

• 20898081 / 21460971 / 22306393 / 22923731 - Related crankshafts

• 20898072 / 20860794 - Crankshaft gears

• 20777676 - Flange

• 21040125 / 21040133 / 21040144 - Main bearings

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

• TAD734GE

• TAD750GE

• TAD751GE

• TAD752GE

• TAD753GE

• TAD754GE

• Confirm crankshaft serial break and insert position

🔌 Function

The insert locates the crankshaft gear or adjoining flange accurately so timing and rotational drive remain correctly aligned.

Common signs of failure or damage:

• Gear movement or fretting

• Damaged or deformed insert

• Timing-gear noise

• Incorrect gear alignment

• Wear in the crankshaft locating bore

• Metal debris in the timing housing

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging