21951974 Pipe Adapter | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta hose adapter with a 50 mm inner diameter, stepping to 32 mm and 38 mm outer diameters over lengths of 142 mm and 99 mm. Adapters of this type connect a seawater filter to cooling hoses of other diameters and can be cut down if a shorter step is wanted; hose clamps for the filter connection are included, but clamps for the cooling hose must be ordered separately. One or two adapters are needed per installation. It weighs 0.197 kg and consolidates six earlier references: 1140034, 21219698, 21566910, 21566908, 838315 and 842466.

⚙️ Key Features

• 50 mm inner diameter, stepping to 32 mm and 38 mm outer diameters
• 142 mm and 99 mm lengths
• Can be cut to suit the installation
• Hose clamps for the filter connection included
• 0.197 kg
• Consolidates 1140034, 21219698, 21566910, 21566908, 838315 and 842466
• Stepped, so it can be cut back to the diameter needed
• Inner diameter: 50 mm
• Length: 142/99 mm
• Outer diameter: 32/38 mm
• Fits: Volvo Penta seawater filters
• Also supersedes Volvo part numbers 3594156, 3594158, 846162 and 858843

📋 Kit Contents

• Hose adapter
• Hose clamps for the connection to the filter

🔌 Function

Steps a larger hose down to a smaller spigot so two different hose sizes can be joined between the seawater filter and the cooling run.

⚠️ Common Signs of Failure

• Coolant or seawater weeping from the joint at either end
• Staining, crust or a dried residue trail around the clamp bands
• Hose slipping off, or a clamp that needs constant retightening
• Adapter found cracked, split or eroded thin at the step on removal
• Sealing surface pitted or furred with scale

🛠️ Service Notes

• Order by the diameters, not by appearance - adapter 21951975 has a 32 mm inner diameter and steps down to 16 mm and 19 mm
• Count the joints first: one or two adapters are needed per installation
• Clamps for the cooling hose side are not included, so order those separately
• Hose clamps for the cooling hoses are ordered separately
• One or two adapters are required for an installation

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21951974 → Supersedes 1140034

Other-Brand OEM Numbers

• VOE21951974

📦 Condition

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