# 955997 O-Ring | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta o-ring weighing 0.002 kg and listed for 50 applications across the MD, MB, D and AQD families and IPS installations. It supersedes 876449.

## 🚤 Compatibility

-   **Engine Family:** MD, MB, D, AQD, IPS
-   **HP Range:** 260-435 HP

Full model list at the end of this description.

## ⚙️ Key Features

-   0.002 kg
-   Supersedes 876449
-   50 applications, including IPS installations
-   Order by part number
-   Also supersedes Volvo part number 875576

## 🔌 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 dripping 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

### OEM Supersession Chain

-   955997 → Supersedes 876449

### Aftermarket / Verified Equivalents

-   SLP: OR-997

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D6-330D-E, D6-370D-E, D6-330D-C, D6-370D-C, D6-330D-D, D6-370D-D, D6-330D-F, D6-370D-F, D6-300D-F, D6-310D-D, D6-310D-C, D6-310D-E, D6-435D-D, D6-435D-E, D6-435D-F, D6-435D-C
-   Volvo Penta D4-260D-C, D4-260D-D, D4-260D-E, D4-260D-F, D4-300D-C, D4-300D-D, D4-300D-E, D4-300D-F
-   Volvo Penta IPS-A, IPS-B, IPS-F, IPS-C, IPS-D, IPS-E
-   Volvo Penta MD5A, MD5B, MD5C
-   Volvo Penta 8.1IPSCE-MF, 8.1IPSCE-P, 8.1IPSCE-Q
-   Volvo Penta MD11C, MD11D
-   Volvo Penta MD17C, MD17D
-   Volvo Penta MD6A, MD6B
-   Volvo Penta MD7B, MD7A
-   Volvo Penta AQD2B
-   Volvo Penta MB10A
-   Volvo Penta MD1B
-   Volvo Penta MD2B
-   Volvo Penta MD3B
-   Volvo Penta MD67C

## Details

- **Price:** 3.05 AUD
- **Vendor:** Volvo Penta
- **Type:** Gaskets & Seals
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3.05 AUD | In stock |

## Images

- 955997 O-Ring | Genuine Volvo Penta Part
- 955997 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/955997-o-ring-genuine-volvo-penta)
> Updated: 2026-09-06