Turbo Gasket – Fits Volvo Penta AD31 AD41 AQ40 AQ41 MD42 TMD31 TMD40 TMD41 (Replaces 23557470, 23557475, 859111, 3582676)

Product Details

This Turbo Gasket is designed for Volvo Penta marine diesel engines including the AD31, AD41, AQ40, AQ41, MD42, TMD31, TMD40, and TMD41 series. It provides a reliable seal for the turbocharger exhaust manifold connection, ensuring proper operation across a broad range of Volvo Penta models spanning AQAD, KAMD, TAMD, and TMD families.

This gasket directly replaces Volvo Penta part numbers 23557470, 23557475, 859111, and 3582676.

• Engineered for marine turbo applications in Volvo Penta diesel engines
• Ensures proper sealing between turbocharger and exhaust manifold
• Direct-fit aftermarket replacement for multiple OEM part numbers

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Part Type

Turbocharger Exhaust Gasket

Application

Marine diesel engines

Replaces OEM

23557470, 23557475, 859111, 3582676

Fitment

Volvo Penta AD, AQAD, D, KAD, KAMD, MD, TAMD, TD, TMD series

What's in the Box

• 1 × Exhaust Manifold Elbow Riser Gasket

Installation Notes

1. Disconnect the battery and allow the engine to cool completely before beginning work.
2. Remove the turbocharger inlet and outlet connections, taking care to label hoses and fittings.
3. Clean all mating surfaces thoroughly, removing old gasket material and carbon buildup.
4. Inspect the turbocharger flange and exhaust manifold for cracks or warping.
5. Position the new gasket dry (no sealant) onto the mounting studs or flange.
6. Reinstall the turbocharger and hand-tighten all fasteners in a star pattern.
7. Torque bolts to manufacturer specification in two or three progressive passes.
8. Reconnect all hoses, clamps, and electrical connections, then verify routing.
9. Start the engine and inspect for exhaust leaks at idle and under load.

Troubleshooting & FAQ

How do I know if my turbo gasket is failing?

Common symptoms include exhaust leaks near the turbocharger, sooty residue on the engine block, whistling or hissing sounds under load, loss of boost pressure, or increased exhaust smell in the engine compartment.

Can I reuse the old gasket during reassembly?

No. Turbo gaskets are crush-type seals designed for single use. Reusing an old gasket will likely result in exhaust leaks and potential engine damage.

Do I need sealant on this gasket?

Typically no. Install the gasket dry unless your engine's service manual explicitly calls for high-temperature sealant. Over-application can cause blockages or improper seating.

Will this fit my engine if I see a different part number on my old gasket?

Cross-reference your existing part number with the matrix above. Volvo Penta superseded several older numbers to 23557470, so visual confirmation and engine model verification are essential.

What torque spec should I use for the turbo flange bolts?

Consult your engine's service manual for exact values, as they vary by model. Typical range is 18–25 Nm (13–18 ft·lbs), applied in a star pattern across two passes.

How often should this gasket be replaced?

Replace any time the turbocharger is removed for service. Routine inspection intervals vary, but addressing leaks immediately prevents exhaust back-pressure issues and turbo damage.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

• Verify images/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.