21656851 Air Outlet | Genuine Volvo Penta Part

🔧 Product Description

Adjustable black air nozzle for the Volvo Penta cabin air heater, in the 50 mm size, weighing 0.068 kg. Three nozzle sizes are listed for this heater - 50 mm here, 55 mm as 21656852 and 60 mm as 21656853 - and the duct diameter is the only thing that separates them. The heater's own standard outlets are 55 mm, so check what size the branch this nozzle will serve is actually run in.

⚙️ Key Features

• Adjustable nozzle, black
• 50 mm duct diameter
• 0.068 kg
• 55 mm is 21656852 and 60 mm is 21656853
• Order by the stated duct diameter - the published weights do not rise with size across this set
• Outlet diameter: 50 mm
• Fits: Volvo Penta air heaters

🔌 Function

Delivers warm air into the cabin at the chosen point and lets the occupant aim or throttle the flow.

⚠️ Common Signs of Failure

• Vane or louvre will not hold its position
• Nozzle cracked, chipped or distorted at the duct spigot
• Hose creeping off the nozzle tail with the fan running
• Little air from one outlet while the others blow normally
• Discoloured or brittle plastic after long service near the engine

🛠️ Service Notes

• The heater's standard outlets are 55 mm, so a 50 mm nozzle needs the matching 50 mm hose and connector on that branch

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21656851 → Supersedes 41103312

OEM / Related Numbers

• 41103312 earlier number superseded by this part
• Related 55 mm connection kit: 41103317
• Related 80 mm Y-connector: 41103316

Other-Brand OEM Numbers

• VOE21656851

Aftermarket / Verified Equivalents

• Related heater switch: 41103307
• Related flexible hose kit: 41103329

📦 Condition

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