VolvoEngine Parts

3904446 — 8 Pieces Exhaust Manifold Bolt 3904446 For Cummins Engine 4B3.9 6B5.9 6C8.3 B4.5 Isx Volvo Excavator Ec210 Ew170 Ew180

This set of eight exhaust manifold bolts is engineered to securely fasten the exhaust manifold to the cylinder head, preventing leaks and ensuring proper exhaust gas flow. Manufactured from high-strength, heat-resistant alloy steel, these bolts maintain their integrity under extreme temperatures, unlike worn or stretched fasteners. Signs of failure include exhaust leaks, ticking noises from the engine, or a persistent exhaust smell in the cabin.

8 Pieces Exhaust Manifold Bolt 3904446 For Cummins Engine 4B3.9 6B5.9 6C8.3 B4.5 Isx Volvo Excavator Ec210 Ew170 Ew180 – Part No 3904446 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeExhaust Manifold Bolt
MaterialHigh-strength alloy steel
ApplicationEngine exhaust manifold mounting
Service LifeReplace when manifold is removed or if signs of wear appear
CompatibilityCummins 4B3.9, 6B5.9, 6C8.3, B4.5, ISX; Volvo Excavator EC210, EW170, EW180
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of loose or broken exhaust manifold bolts is often an audible ticking or puffing sound from the engine, especially when cold. If ignored, exhaust gases can leak, leading to a loss of engine power and a noticeable exhaust odor in the operator's cabin. Continued operation risks further damage to the manifold and cylinder head.

Installation Tip

Clean the bolt holes in the cylinder head thoroughly to remove any carbon buildup or debris before installing new bolts. Always tighten the bolts in the sequence and to the torque specified in the service manual to prevent warping the manifold.

Service Note

When replacing exhaust manifold bolts, always install a new exhaust manifold gasket to ensure a proper seal.