838445 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta fuel system O-ring, also supplied within the gasket kit, listed for 66 applications across the AD, TAMD, D, TMD, TD and DP series. It supersedes part number 844174, catalogued earlier as a sealing ring.

🚤 Compatibility

• Engine Family: AD, TAMD, D, TMD, TD, DP, DPX, SP, MD, KAD, KAMD

Full model list at the end of this description.

⚙️ Key Features

• Also included in the gasket kit
• Supersedes 844174, previously listed as a sealing ring
• 66 applications across six engine series

📋 Kit Contents

• Included in gasket kit.

🔌 Function

Seals a fuel joint by being squeezed into its groove, blocking the leakage path between the two parts.

⚠️ Common Signs of Failure

• Diesel weeping or a fuel smell at the joint
• Air drawn into the fuel system causing rough running
• O-ring flattened, nicked or twisted on removal
• Ring hardened or swollen where fuel has attacked it
• Groove or counterface scored so the ring cannot seal

🛠️ Service Notes

• The gasket kit already contains this ring, so check whether the kit is better value when other seals in the same joint are due
• Fit new every time the joint is opened, lubricate lightly with clean fuel, and check the groove for burrs first

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 838445 → Supersedes 844174

OEM / Related Numbers

• 844174 earlier number superseded by this part

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAMD41B, TAMD41D, TAMD41H-A, TAMD41H-B, TAMD41M-A, TAMD41P-A, TAMD41P, TAMD41A
• Volvo Penta AD31, AD31B, AD31D, AD31D-A, AD31L-A, AD31P-A, AD31XD
• Volvo Penta AD41P-B, AD41B, AD41D, AD41P-A, AD41, AD41A, AD41BJ
• Volvo Penta TAMD31L-A, TAMD31M, TAMD31M-A, TAMD31A, TAMD31B, TAMD31D
• Volvo Penta D41, D41B, D41D, D41L-A
• Volvo Penta DP-A, DP-A1, DP-B, DP-B1
• Volvo Penta TMD31A, TMD31B, TMD31D, TMD31L-A
• Volvo Penta TMD41A, TMD41B, TMD41D, TMD41L-A
• Volvo Penta KAD42A, KAD42B, KAD42P-A
• Volvo Penta KAMD42A, KAMD42B, KAMD42P-A
• Volvo Penta D45BPP, D45A
• Volvo Penta 740A, 290A
• Volvo Penta SP-A, SP-A1
• Volvo Penta TAMD42WJ-A, TAMD42B
• Volvo Penta DPX
• Volvo Penta KAD43P-A
• Volvo Penta KAMD43P-A
• Volvo Penta MD31A
• Volvo Penta TD30A
• Volvo Penta TD31ACE
• Volvo Penta TD40A
• Volvo Penta TD45B