1545886 Valve Seat | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta valve seat is a precision cylinder-head valve-seat insert used in the cylinder-head exhaust-valve seating. It is manufactured to the original Volvo Penta dimensions and interface requirements so the valve closes concentrically with the specified contact width and recession. Standard-size exhaust valve seat. In service, it provides the hardened sealing surface for the exhaust valve, supporting compression retention and heat transfer into the cylinder head. Fitment is controlled by the exact engine or product configuration and serialised parts list; confirm OEM number 1545886 against the installed assembly before ordering.

🚤 Compatibility

• Engine Family: TAD, TD, TWD, TMD, THD, TID, DH, TAMD

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 1545886
• Supplied in "Std D" standard size grade
• System group: Engine
• Net weight 0.045 kg
• Supersedes previous part number 1545849
• Fits TD100, TID100, TAD1030/1031/1032, TAMD102/103, THD102, TMD102, TWD1010/1030/1031 and DH10A series engines

🔌 Function

Provides the hardened sealing surface for the exhaust valve, supporting compression retention and heat transfer into the cylinder head. Machine and install the seat to the correct interference, depth, concentricity and valve-contact width; confirm valve recession and sealing before cylinder-head assembly.

⚠️ Common Signs of Failure

• Loss of compression or hard starting on one or more cylinders
• Burnt, pitted or recessed seating face causing valve leakage
• Valve recession requiring repeated tappet clearance adjustment
• Blue smoke, misfire or rough running from poor valve sealing
• Cracking of the seat or the head material around it, or a loose seat in its bore

🛠️ Service Notes

• Seat inserts are an interference fit in the head, so the counterbore has to be clean, round, flat and square before a new seat goes in; normal practice is to chill the insert and warm the head so it drops into place rather than forcing it
• This is machine-shop work — the seat must be cut concentric with the valve guide after installation, so check or renew the guides at the same time and cut the seat angles once the insert is secure
• Inspect the head casting for cracks and for a pounded or spread counterbore before committing to a new seat; a seat that has come loose has usually damaged its pocket
• Use the interference fit, insert size and seat angles specified for your engine rather than any general figure, as they differ between heads
• Check each valve on its finished seat for an even contact band right the way round, and confirm valve position and any permitted recession against the workshop manual for your engine

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 1545886 → Supersedes 1545849

OEM / Related Numbers

• 1545849 earlier number superseded by this part

Aftermarket / Verified Equivalents

• SLP: VS-886

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TD100G-85, TD100G, TD100GG, TD100GGP, TD100HP, TD100HPB, TD100GG-85, TD100GP, TD100GP-85
• Volvo Penta TID100KG, TID100KGP, TID100K, TID100K-87, TID100KGP-87, TID100KP, TID100KP-87, TID100KPB-87
• Volvo Penta TAD1030P, TAD1030G, TAD1030GE, TAD1030V, TAD1030VE
• Volvo Penta THD102KB, THD102KD, THD102K-KB
• Volvo Penta TAD1031G, TAD1031GE
• Volvo Penta TAMD102A, TAMD102D
• Volvo Penta DH10A
• Volvo Penta TAD1032GE
• Volvo Penta TAMD103A
• Volvo Penta TD1010G
• Volvo Penta TD1030VE
• Volvo Penta TMD102A
• Volvo Penta TWD1010G
• Volvo Penta TWD1030ME
• Volvo Penta TWD1031VE