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Holden HSV Jackaroo Engine Number
Use this guide to locate the engine number on your Holden HSV Jackaroo and line up the right engine-related parts enquiry.
An "HSV Jackaroo" should be treated as an HSV-badged or enhanced version of the Holden Jackaroo, which was itself a rebadged Isuzu Trooper body-on-frame 4×4 wagon. Because this designation is not widely documented and the vehicle is Isuzu-engined rather than a V8 Commodore derivative, treat it as a base Jackaroo for all mechanical purposes and confirm the exact specification and any HSV badging directly from the vehicle.
Where to find your Holden engine number
The stamped engine number is on a machined pad on the block. Its location depends on the engine family:
- Inline six-cylinder: on a pad on the right-hand side of the block, above the engine-mount boss.
- V8 (253 / 308, 4.2 / 5.0 litre): on a pad on the left-hand side of the block, above the engine mounting.
- V6 (Buick-derived, Ecotec, Alloytec): on the front left-hand face of the block, below the ignition coil.
- Later V6 and LS V8 models: the build / engine plate sits on the radiator support panel (VT-VZ era) or the passenger-side strut tower (VE / VF era).
You may need to wipe the pad clean to read the stamped number, and on air-conditioned cars the compressor can sit in front of it. Older Holden engines use a capacity-plus-tune prefix (for example 186S or a Q-series V8 code), while modern engines (Ecotec, Alloytec and the LS V8 family) use a GM engine code plus a separate stamped serial.
For the most accurate part match, send us both the engine code or prefix and the full stamped number, along with whether the car is automatic or manual.
On this model
Engines are Isuzu units, not a Holden V8, and are identified by Isuzu engine codes and stamped serial numbers rather than the Holden engine-prefix system. Petrol options ran from a four-cylinder up to V6s (such as the 3.2-litre 6VD1 and later 3.5-litre 6VE1), while the turbo-diesels included the 2.8-litre 4JB1-T and later 3.0-litre 4JX1 – so establish clearly whether the vehicle is petrol or diesel, as they share very few parts. Read the code and serial from the stamping on the block rather than inferring it from the year, and quote that stamped number when sourcing. Cross-referencing the same Isuzu engine code across the Trooper range will usually broaden availability, and any HSV-specific engine output should be treated as unconfirmed unless verified from the vehicle.
This page also draws on later year-by-year data for Holden Jackaroo to cover modern variants.
Frequently asked questions
Where is the engine number on a Holden HSV Jackaroo?
It is stamped on a machined pad on the engine block. Inline sixes are on the right side above the engine mount, the 253/308 V8s on the left side above the mount, and the V6 engines on the front left face below the ignition coil. You may need to wipe the pad clean to read it.
What is the difference between an engine prefix and an engine code?
Older Holden engines use a capacity-plus-tune prefix stamped on the block, while modern engines (Ecotec, Alloytec and the LS V8 family) use a GM engine code plus a separate stamped serial.
Do you match engine numbers to parts?
Yes. Send us the engine code or prefix and the full stamped number, plus whether the car is automatic or manual, and we will match the right engine-related part.
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