856433 Spacer Flange | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta spacer flange from the Inlet and Exhaust System group, weighing 4.055 kg and listed for three applications in the BB range. The second spacer flange in this run, 856434, carries exactly the same three BB applications and is listed at 6.595 kg. Nothing published gives either one a dimension, so the mass difference cannot be read as a thickness - order by part number against the installation.

🚤 Compatibility

Typically suits:

• Volvo Penta 740B
• Volvo Penta 740A
• Volvo Penta BB740A

• Engine Family: BB

⚙️ Key Features

• Inlet and Exhaust System spacer flange
• 4.055 kg
• Three applications in the BB range
• Shares its fitment with spacer flange 856434 at 6.595 kg

🔌 Function

Sets the spacing between two flanged faces in the exhaust run, carrying the joint loads across the gap.

⚠️ Common Signs of Failure

• Exhaust blowing or ticking at either flange face
• Soot or water tracking out from the joint line
• Flange face corroded, pitted or eroded
• Casting cracked between bolt holes
• Flange fasteners repeatedly loosening

🛠️ Service Notes

• Spacer flange 856434 shares the same three applications - identify by part number, not by weight or by eye
• Renew the gaskets on both faces and check each face for flatness before assembly
• Exhaust joints in an enclosed space are a carbon monoxide risk; make both faces good

📦 Condition

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