856891 Exhaust Riser | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta exhaust riser from the Inlet and Exhaust System group, weighing 7.688 kg and listed for 25 applications across the BB, DP, SP and MS ranges. It supersedes 855384. The other riser in this run, 856910, sits at 7.711 kg with 26 applications and supersedes 856639 - only 23 grams apart, so weight cannot be used to separate them. Order by part number or by the number being replaced.

🚤 Compatibility

• Engine Family: BB, DP, SP, MS

Full model list at the end of this description.

⚙️ Key Features

• Inlet and Exhaust System exhaust riser
• 7.688 kg
• 25 applications across BB, DP, SP and MS
• Supersedes 855384 - only 23 grams from riser 856910
• 2 used per assembly

🔌 Function

Lifts the exhaust above the waterline as it leaves the manifold, and introduces the cooling water into the gas stream.

⚠️ Common Signs of Failure

• Water finding its way back towards the manifold or the cylinders
• Exhaust blowing or ticking at a flange
• Heavy rust scaling, blistering or a soft, flaking patch
• Internal passage furred, scaled or partly blocked
• Steam or water at a joint that used to be dry

🛠️ Service Notes

• Order against the superseded number where possible - 855384 comes through as this riser, 856639 as 856910
• Renew all flange gaskets and check the faces for flatness and corrosion
• A failed riser can put water into the engine - do not defer it once water ingress is suspected

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 856891 → Supersedes 855384 → Supersedes 826460

OEM / Related Numbers

• 855384 earlier number superseded by this part
• 826460 earlier number superseded by this part

Aftermarket / Verified Equivalents

• Sierra: 18-1935-1
• Barr: VO-20-855384
• GLM: 51510
• HGE: HGE5384
• Mallory: 9-40910
• Osco: 56879
• Marine Power: 099-773

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 740B, 501B, 570A, 572A, 430A, 430B, 431A, 431B, 432A, 434A, 570, 500B, 430
• Volvo Penta DP-C, DP-C1, DP-D, DP-D1, DP-A, DP-A2
• Volvo Penta SP-C, SP-A2, SP-C1
• Volvo Penta BB231A
• Volvo Penta BB261A
• Volvo Penta MS4B