1664473 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta o-ring is a oil-compatible sealing component used in the gearbox/saildrive filler-cap and steering-system sealing locations. It is manufactured to the original Volvo dimensional, material and interface requirements so the serviced assembly retains its designed alignment, sealing, load capacity and operating reliability. EPDM O-ring dimensions: approximately 60 × 66 × 3 mm. In service, it seals the filler-cap or matched housing interface against lubricant leakage and water or dirt entry. Selection must be confirmed by OEM part number 1664473, the exact engine/product model, serial number and the installed assembly configuration.

🚤 Compatibility

• Engine Family: D, TAD, TD, TWD, TMD, TID, MS, TAMD, MD

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 1664473
• System group: Cooling System
• Included in repair kit 276814 for water pump 1675945
• Supersedes part numbers 1660713, 876959 and 925254
• Net weight approximately 0.0023 kg
• Fits 2000-series, MD2010-MD2040, MD22, MD31, MS2-series and TD/TID/TMD/TWD/TAD/TAMD 100, 120, 121, 1030 and 1230 series engines
• Also supersedes Volvo part number 896676

📋 Kit Contents

• Included in repair kit 276814 for water pump 1675945.

🔌 Function

Forms the seal at the gearbox or saildrive filler cap (also used at related steering-system housing joints), sealing the cap or matched housing interface against lubricant loss and against water or dirt entering the housing.

⚠️ Common Signs of Failure

• Gear oil weeping or seeping from around the filler cap
• Cap will not seal, letting water or dirt track into the gearbox
• O-ring hardened, cracked or flattened after age and heat cycling
• Gearbox oil level found low with no other visible leak point
• Filler cap difficult to seat squarely or leaks when the boat heels

🛠️ Service Notes

• Always fit a new O-ring — never refit one that has been removed, as it has already taken a set in its groove
• Clean the groove and both sealing faces and check them for nicks, scoring and corrosion pitting; a damaged groove will leak however good the new seal is
• Smear the ring with a little clean lubricant compatible with the fluid it seals, then roll it into place by hand so it sits untwisted and fully in its groove
• Never lever an O-ring over a sharp edge or thread with a screwdriver; use a blunt plastic tool and protect any edge the ring has to pass
• Assemble the joint squarely and tighten to the figure and sequence given in the workshop manual for your engine — over-tightening extrudes the ring and causes the very leak you were curing

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 1664473 → Supersedes 1660713

OEM / Related Numbers

• 876959 earlier number superseded by this part
• 925254 earlier number superseded by this part
• 1660713 earlier number superseded by this part

Other-Brand OEM Numbers

• Elring 487.820

Aftermarket / Verified Equivalents

• Euroricambi 88120039

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 2003, 2003R, 2003R SOLAS, 120S-B, 2003TB, 2003TB SOLAS, 120SC, 120S-D, 120S-E, 2001AG, 2001B, 2001BG, 2001D, 2003D, 2003T, 2003TR, 2002AG, 2002B, 2002BG, 2002D, 2003B, 2003B SOLAS, 2003 SOLAS, 2001, 2002, 2001R
• Volvo Penta TID121KG, TID121KGP, TID121KP, TID121KPB, TID121L, TID121LG, TID121LGP, TID121LP, TID121LPB, TID121K, TID121K-87
• Volvo Penta MS2B-A, MS2B-L, MS2L-E, MS2B, MS2V, MS2A-D, MS2L-D, MS2A-E
• Volvo Penta TD121G-87, TD121GGP-87, TD121G, TD121GG, TD121GGP, TD121GP, TD121GPB, TD121CRC
• Volvo Penta TAMD122A, TAMD122A/C, TAMD122D, TAMD122P-A, TAMD122P-B
• Volvo Penta TAMD162C-C, TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
• Volvo Penta TAD1030P, TAD1030G, TAD1030GE, TAD1030V
• Volvo Penta TWD1210G, TWD1210P, TWD1210PB, TWD1210V
• Volvo Penta TAMD165A, TAMD165C, TAMD165P
• Volvo Penta TWD1211V, TWD1211P, TWD1211G
• Volvo Penta MD2010-C, MD2010-D
• Volvo Penta MD2020-C, MD2020-D
• Volvo Penta MD2030-C, MD2030-D
• Volvo Penta MD2040-C, MD2040-D
• Volvo Penta MD22, MD22A
• Volvo Penta TAD1031G, TAD1031GE
• Volvo Penta TAD1230G, TAD1230V
• Volvo Penta TAMD102A, TAMD102D
• Volvo Penta TAMD163A-A, TAMD163P-A
• Volvo Penta TD100G, TD100CRC
• Volvo Penta TWD1230ME, TWD1230VE
• Volvo Penta D2002AG
• Volvo Penta D2003AG
• Volvo Penta D70CRC
• Volvo Penta MD31A
• Volvo Penta TAD1032GE
• Volvo Penta TAD121CHC
• Volvo Penta TAD1231GE
• Volvo Penta TAD1232GE
• Volvo Penta TAMD103A
• Volvo Penta TAMD121D
• Volvo Penta TD1030VE
• Volvo Penta TD120HP
• Volvo Penta TD1210G
• Volvo Penta TD70CRC
• Volvo Penta TMD100C
• Volvo Penta TMD121C
• Volvo Penta TMD122A
• Volvo Penta TMD22A
• Volvo Penta TWD1030ME
• Volvo Penta TWD1031VE
• Volvo Penta TWD1231VE