# 955991 O-Ring | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta o-ring listed for 124 applications across the AQD, TMD, AQ, AD, AQAD and D families. It carries no build note and no supersession history, so it is ordered by number against the assembly it seals.

## 🚤 Compatibility

-   **Engine Family:** AQD, TMD, AQ, AD, AQAD, D, TSK, MD, TAMD, THAMD, B, BB, DP, SP, HS, DPX, KAD, KAMD

Full model list at the end of this description.

## ⚙️ Key Features

-   124 applications across six engine families
-   No supersession history
-   No build restriction listed
-   Order by part number

## 🔌 Function

Seals the joint between two faces, squeezed into its groove to hold pressure and keep fluid where it belongs.

## ⚠️ Common Signs of Failure

-   Weeping or seeping at the joint
-   Ring flattened, hardened or shiny
-   Nicks or splits from assembly damage
-   Swelling or softening from the wrong fluid

## 🛠️ 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

### Aftermarket / Verified Equivalents

-   SLP: OR-991

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta 500A, 501A, 501B, 570A, 740A, 430A, 431A, 230A, 230B, 250A, 250B, 251A, 290A, 500B, 571A
-   Volvo Penta TAMD31L, TAMD31L-A, TAMD31M, TAMD31M-A, TAMD31P, TAMD31P-A, TAMD31S, TAMD31B, TAMD31D, TAMD31P-B
-   Volvo Penta DP-C, DP-C1, DP-D, DP-D1, DP-A, DP-A1, DP-B, DP-B1
-   Volvo Penta TAMD41B, TAMD41H-A, TAMD41H-B, TAMD41M-A, TAMD41P-A, TAMD41P, TAMD41P-B, TAMD41A
-   Volvo Penta AD31, AD31B, AD31D, AD31D-A, AD31L-A, AD31P-A, AD31XD
-   Volvo Penta AD41P-B, AD41B, AD41L-A, AD41P-A, AD41, AD41A, AD41BJ
-   Volvo Penta AQD70B, AQD70BL, AQD70CL, AQD70D, AQD70C
-   Volvo Penta B230, B230E, B230F, B230FB, B230FX
-   Volvo Penta SP-C, SP-C1, SP-A, SP-A1
-   Volvo Penta TAMD70B, TAMD70E, TAMD70C, TAMD70D
-   Volvo Penta AQ151A, AQ151B, AQ151C
-   Volvo Penta D41, D41B, D41L-A
-   Volvo Penta MD70B, MD70BK, MD70C
-   Volvo Penta TMD31B, TMD31D, TMD31L-A
-   Volvo Penta TMD41A, TMD41B, TMD41L-A
-   Volvo Penta TSK DP-E, TSK DP-G, TSK DP-S
-   Volvo Penta AQ131B, AQ131C
-   Volvo Penta AQ171A, AQ171C
-   Volvo Penta AQ200D, AQ200F
-   Volvo Penta AQ225D, AQ225F
-   Volvo Penta AQ271A, AQ271C
-   Volvo Penta AQ311A, AQ311B
-   Volvo Penta KAD42A, KAD42B
-   Volvo Penta THAMD70C, THAMD70B
-   Volvo Penta TMD70C, TMD70B
-   Volvo Penta AQ145B
-   Volvo Penta AQ175A
-   Volvo Penta AQ205A
-   Volvo Penta AQ211A
-   Volvo Penta AQ231A
-   Volvo Penta AQ260A
-   Volvo Penta AQ290A
-   Volvo Penta AQAD30A
-   Volvo Penta AQAD40B
-   Volvo Penta BB740A
-   Volvo Penta DPX
-   Volvo Penta HS1A
-   Volvo Penta KAMD42B
-   Volvo Penta MD31A
-   Volvo Penta TAMD42B

## Details

- **Price:** 5.02 AUD
- **Vendor:** Volvo Penta
- **Type:** Gaskets & Seals
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 5.02 AUD | In stock |

## Images

- 955991 O-Ring | Genuine Volvo Penta Part
- 955991 O-Ring | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/955991-o-ring-genuine-volvo-penta)
> Updated: 2026-09-19