# 23958438 O-Ring Kit | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta D8 Oil-Module O-Ring Kit - Part Number: 23958438

  

A genuine Volvo Penta oil-filter-cap O-ring kit for selected D8 oil-module housings. Part number 23958438 replaces the earlier individual O-ring 21600674 and seals the filter-cap joint against engine-oil leakage.

  

⚙️ Key Features

  

• Genuine Volvo Penta oil-module sealing kit

• Direct replacement for earlier O-ring 21600674

• Used at the oil-filter-cap positions in the applicable D8 oil module

• Oil-resistant elastomer for engine-lubrication service

• Renew whenever the applicable filter cap is removed or the seal is damaged

  

📋 Kit Contents

  

• 1 × oil-filter-cap O-ring kit - 23958438

• Earlier single O-ring reference replaced by the kit - 21600674

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 23958438 → Supersedes 21600674

  

OEM / Related Numbers:

  

• 21600674

• 23958438

• 23958454 related oil-filter kit

• 23593794 related filter cap

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D8 oil-cooler and oil-filter modules

  

Typically suits:

  

• Engine models: TAD840GE, TAD841GE, TAD842GE, TAD843GE, TAD850VE, TAD851VE, TAD852VE, TAD853VE, TAD870VE, TAD871VE, TAD872VE, TAD873VE, TAD880GE, TAD881GE, TAD882GE, TAD880VE, TAD881VE, TAD882VE, TAD883VE and TAD884VE where the applicable oil module is fitted

• Engine Type: Volvo Penta D8 industrial diesel

• Confirm oil-module configuration and engine serial number before ordering

  

🔌 Function

  

Seals the oil-filter cap to the oil-module housing so pressurised engine oil remains contained and unfiltered oil cannot bypass the intended joint.

  

⚠️ Common Signs of Failure

  

• Oil seepage around the filter cap

• A flattened, cut, twisted or hardened O-ring

• Oil residue returning shortly after filter service

• Loss of oil with no other external leak identified

• Poor cap sealing after the correct cap torque has been applied

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 7.51 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 7.51 AUD | In stock |

## Images

- 23958438 O-Ring Kit | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/23958438-o-ring-kit-genuine-volvo-penta)
> Updated: 2026-07-29