# 1504951 Relay | Genuine Volvo Penta Part

## 🔧 Product Description

This is a genuine Volvo Penta 24V relay from the Other Electrical Equipment group, used as a switching component within the engine's electrical circuits. It carries the 24-volt rating that distinguishes it from equivalent-looking 12V relays, so voltage must be matched to the system it is fitted to. It is a lightweight, panel- or harness-mounted item at approximately 0.03 kg net weight.

## 🚤 Compatibility

-   **Engine Family:** MD, TMD, D, TD, AQ, TAD, TWD, TID, BB, TAMD, B, MB, AQD
-   **Year Range:** Approximately 1970s-1990s

Full model list at the end of this description.

## ⚙️ Key Features

-   OEM Volvo Penta part number 1504951
-   24V rating - must match the engine's system voltage
-   System group: Other Electrical Equipment
-   Net weight approximately 0.032 kg
-   Fits a broad span of Volvo Penta petrol and diesel engines including AQ, BB, MD, TMD, TD, TID, TAMD, TWD and TAD series
-   Engine type: Volvo Penta legacy heavy-duty diesel electrical system
-   Quantity varies by assembly, most commonly one

## 🔌 Function

The relay uses a low-current control signal to switch a higher-current circuit, allowing switches and control panels to operate loads such as starting, glow, fuel or accessory circuits. It isolates the control side from the load side, protecting switchgear and wiring from full circuit current.

## ⚠️ Common Signs of Failure

-   Circuit does not energise when the control switch is operated
-   No audible click from the relay when activated
-   Intermittent operation of the controlled circuit, often worsening with vibration or heat
-   Burnt, pitted or welded internal contacts causing a permanently live or permanently dead circuit
-   Corroded or discoloured terminals and signs of overheating at the relay body

## 🛠️ Service Notes

-   Isolate the batteries before removing or fitting a relay, and note the connections as they come off
-   Fit like for like — coil voltage, contact rating, pin layout and any diode or resistor built across the coil must match the original, since a relay that plugs in is not necessarily the correct one
-   Check the base, socket and terminals for corrosion, spread or burnt contacts and confirm the supply and earth paths before condemning a relay; damp connections and poor earths cause more of these faults than the contacts themselves
-   Mount the relay in its original clip or holder so it stays secure and as dry as possible — vibration and moisture are the usual killers in a marine installation
-   On petrol installations, only ignition-protected electrical devices should be fitted in the engine space or fuel tank compartment, so use parts approved for that use

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   1348657 and 1259926 related earlier Volvo relay references
-   1214764, 872300, 837878, 8153600, 344686 and 239883 corresponding relay references by circuit

### OEM / Related Numbers

-   1348657 related reference
-   1259926 related reference
-   1214764 related reference
-   872300 related reference
-   837878 related reference
-   8153600 related reference
-   344686 related reference
-   239883 related reference

### Other-Brand OEM Numbers

-   VOE1504951
-   Bosch: 0 332 204 101
-   Hella: 4RD 003 520-071
-   Hella: 4RD 933 332-071

### Aftermarket / Verified Equivalents

-   Heavy-duty electrical aftermarket: cross-reference 1348657 / 1259926 / 1214764
-   Febi Bilstein: 11931
-   PE Automotive: 080.021-00A
-   IPD: 40-0016
-   Herth+Buss Elparts: 75613197

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta TD100ARC, TD100G-85, TD100A, TD100CHC, TD100G, TD100GG, TD100GGP, TD100HP, TD100HPB, TD100GG-85, TD100GP, TD100GP-85, TD100CRC
-   Volvo Penta TID121KG, TID121KGP, TID121KP, TID121KPB, TID121L, TID121LG, TID121LGP, TID121LP, TID121LPB, TID121FG, TID121K, TID121K-87
-   Volvo Penta TD120C, TD120G, TD120GG PP, TD120HP, TD120HPP, TD120AHC, TD120ARC, TD120BHC, TD120BRC
-   Volvo Penta TD121GGP-87, TD121G, TD121GG, TD121GGP, TD121GP, TD121GPB, TD121CHC, TD121CRC
-   Volvo Penta TID100KG, TID100KGP, TID100K, TID100K-87, TID100KGP-87, TID100KP, TID100KP-87, TID100KPB-87
-   Volvo Penta TD61A, TD61ACE, TD61AG, TD61AGP, TD61AP, TD61APB, TD61AW
-   Volvo Penta TD71A, TD71ACE, TD71AG, TD71AGP, TD71AP, TD71APB, TD71AW
-   Volvo Penta 2003R SOLAS, 100S, 110S, 2003B SOLAS, 2003 SOLAS
-   Volvo Penta TID71A, TID71AG, TID71AGP, TID71AP, TID71APB
-   Volvo Penta AQ130C, AQ130D, AQ130A, AQ130B
-   Volvo Penta TD60D-83, TD60A, TD60B, TD60D
-   Volvo Penta TD70CHC, TD70CRC, TD70G, TD70G-83
-   Volvo Penta TID162AG, TID162AGP, TID162AP, TID162APB
-   Volvo Penta AQ170B, AQ170C, AQ170A
-   Volvo Penta BB115A, BB115B, BB115C
-   Volvo Penta BB170B, BB170C, BB170A
-   Volvo Penta MB20A, MB20B, MB20C
-   Volvo Penta MD100A, MD100B, MD100B-CC
-   Volvo Penta TAD1030P, TAD1030G, TAD1030GE
-   Volvo Penta TAD120AHC, TAD120BHC, TAD120CHC
-   Volvo Penta TID120FPP, TID120FG, TID120HPP
-   Volvo Penta TWD610G, TWD610P, TWD610PB
-   Volvo Penta TWD710G, TWD710P, TWD710PB
-   Volvo Penta AQ115A, AQ115B
-   Volvo Penta AQD21A, AQD21B
-   Volvo Penta D70CHC, D70CRC
-   Volvo Penta MD21B, MD21A
-   Volvo Penta MD70B, MD70C
-   Volvo Penta TAD1031G, TAD1031GE
-   Volvo Penta TAD1630P, TAD1630PB
-   Volvo Penta TAD730G, TAD730P
-   Volvo Penta TAMD120A, TAMD120B
-   Volvo Penta TD610G, TD610M
-   Volvo Penta TID60DG, TID60D
-   Volvo Penta TID61AG, TID61AGP
-   Volvo Penta TMD100A, TMD100C
-   Volvo Penta TMD120A, TMD120B
-   Volvo Penta TWD1210G, TWD1210P
-   Volvo Penta TWD1211P, TWD1211G
-   Volvo Penta TWD1630P, TWD1630PP
-   Volvo Penta AQ120B
-   Volvo Penta AQ140A
-   Volvo Penta AQ165A
-   Volvo Penta B20
-   Volvo Penta BB165A
-   Volvo Penta D100B
-   Volvo Penta MD120A
-   Volvo Penta TAD1032GE
-   Volvo Penta TAD121CHC
-   Volvo Penta TAD1230G
-   Volvo Penta TAD1231GE
-   Volvo Penta TAD1232GE
-   Volvo Penta TAD740GE
-   Volvo Penta TAD741GE
-   Volvo Penta TAMD102A
-   Volvo Penta TAMD103A
-   Volvo Penta TAMD60C
-   Volvo Penta TAMD70E
-   Volvo Penta TD1010G
-   Volvo Penta TD1210G
-   Volvo Penta TD630ME
-   Volvo Penta TD710G
-   Volvo Penta TD730ME
-   Volvo Penta TID70G
-   Volvo Penta TMD102A
-   Volvo Penta TMD70C
-   Volvo Penta TWD1010G
-   Volvo Penta TWD1030ME
-   Volvo Penta TWD1230ME
-   Volvo Penta TWD630ME
-   Volvo Penta TWD730ME
-   Volvo Penta TWD740GE

## Details

- **Price:** 39.78 AUD
- **Vendor:** Volvo Penta
- **Type:** Electrical & Wiring
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 39.78 AUD | In stock |

## Images

- 1504951 Relay | Genuine Volvo Penta Part
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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/1504951-relay-genuine-volvo-penta)
> Updated: 2026-09-19