Diesel turbos for the KB300, KB250, D-Max and MU-X — 4JJ1 3.0 D-Teq / DDi (IHI RHV5 / RHV4 VGS) and 4JA1 2.5 TD units, plus the older 3.0 TD and newer 1.9 Ddi VGT. Compare free quotes from verified suppliers across South Africa.
D-Teq · DDi · VGT · Illustrative
The flagship 4JJ1 3.0 D-Teq / DDi (IHI RHV5 / RHV4 VGS) and the high-volume 4JA1 2.5 TD, plus the older 4JH1 / 4JX1 3.0 TD and the newer RZ4E 1.9 Ddi VGT. Suppliers cover the full KB, D-Max, MU-X and Rodeo range.
Isuzu uses more than one part number per engine — the 3.0 D-Teq is 8980115293, the 2.5 TD is 8972402101, and the older 3.0 splits into 4JH1-TC and 4JX1. Tell us your VIN and we match the exact unit.
Compare tested used pull-offs, reconditioned/exchange units and new aftermarket — and on the VGS/VGT turbos check the actuator is included and calibrated, with warranty confirmed by each supplier.
Isuzu Turbochargers
Indicative SA pricing by engine and turbo code. Send your VIN for an exact match and a free quote.
Diesel Popular Code: IHI RHV5 VIEZ · 8980115293 (gen-1) · 3.0 D-Teq / DDi (4JJ1-TC)
Diesel Popular Code: IHI RHF4 · 8972402101 · 2.5 TD (4JA1-L / 4JA1-T)
Diesel Code: IHI RHF5 VIEK · 3.0 TD pre-D-Teq common rail (4JH1-TC / 4JX1)
Diesel Code: IHI VGT · 1.9 Ddi (RZ4E-TC)
Product images are illustrative only — the exact turbo varies by supplier, condition and VIN.
Price guide
Indicative ranges by engine and turbo code. Actual quotes depend on condition and whether the unit is used, reconditioned/exchange or new aftermarket — and whether the actuator is included on the VGS/VGT units.
| Engine / Turbo | Price Range (ZAR) |
|---|---|
| KB300 / D-Max 3.0 D-Teq / DDi — 4JJ1-TC (IHI RHV5 VIEZ gen-1 / RHV4 VGS gen-2) | R7,497 – R14,995 |
| KB250 / Rodeo 2.5 TD — 4JA1-L/T (IHI RHF4) | R4,750 – R4,995 |
| KB300 TDi / Rodeo / Frontier 3.0 TD — 4JH1-TC / 4JX1 (IHI RHF5 VIEK) | Request a quote |
| D-Max / MU-X 1.9 Ddi — RZ4E-TC (IHI VGT) | Request a quote |
These are estimates based on current SA market data — request a free quote for an exact price on your specific model and year.
Condition & warranty
The same Isuzu turbo comes three ways in South Africa. Here's how they compare on price, warranty and what you get — so you can tell suppliers which to quote.
Tested second-hand unit removed from a low-mileage donor vehicle.
Your old core is surrendered; the unit is stripped, rebuilt and balanced.
A brand-new unit — aftermarket or genuine OEM-grade.
Not sure which to pick? Send your VIN and ask suppliers to quote all three — you compare price and warranty side by side.
Isuzu is diesel-only, so the real split is turbo geometry: the common-rail D-Teq / DDi engines run a variable-geometry (VGS/VGT) turbo, while the older pre-D-Teq engines run a simpler fixed-geometry unit. Find your engine family below, then send your VIN so suppliers quote the exact part.
Vanes & electronic actuator adjust boost — soot makes them stick
The flagship SA bakkie turbo — IHI RHV5 "VIEZ" on gen-1, moving to the IHI RHV4 VGS unit on later builds. The vanes and actuator gum up with soot.
The modern 1.9 Ddi — an IHI variable-geometry (VGT) unit on the 2018-onward D-Max and MU-X. Too new for settled used stock, so quote-only.
Simpler wastegate turbos — cheaper & well-supported (or quote-only)
The IHI RHF4 (8972402101) on the older KB250 2.5 TD and Rodeo — the cheaper, high-volume unit. Note the later 2.5 D-Teq is the 4JK1 with its own VGS turbo.
The pre-D-Teq 3.0 common-rail turbo — IHI RHF5 "VIEK" on the older KB300 TDi, Rodeo and Frontier. Thinner used stock, so best sourced on a quote.
A bare CHRA "core" is only the centre cartridge — not a complete turbo with actuator and housings. It's cheaper, but check exactly what's included before you compare prices. On the VGS/VGT diesels especially, confirm the actuator is part of the deal.
Still not sure? and suppliers will confirm the exact turbo for you.
Find your model
Pick your model and we'll match the right turbo by engine and VIN. Tap any model to start a free quote.
On the VGS/VGT diesels especially, most of these point to sticking vanes or a tired actuator rather than a dead turbo — so get it diagnosed before you replace the whole unit.
A turbo lives or dies on clean oil and heat management. A few habits go a long way on SA roads:
Most people looking for an Isuzu turbo in South Africa drive a KB300, D-Max or MU-X — and the demand sits squarely on the diesel D-Teq and DDi engines. The 3.0 D-Teq / DDi (4JJ1) is the flagship SA bakkie turbo — an IHI RHV5/RHF5 variable-nozzle turbo (VNT), where the vanes and actuator adjust boost across the rev range. When those vanes gum up with carbon and soot you get power loss, limp mode and a tell-tale whistle — the single most common reason owners end up here. The 2.5 TD (4JA1) uses a simpler IHI RHF4/RHF5, which is why it is usually the cheaper, high-volume Isuzu turbo to replace.
The biggest trap is buying the wrong part number. Isuzu fits more than one turbo across the range — the 3.0 D-Teq (4JJ1) is 8980115293, the 2.5 TD (4JA1) is 8972402101, and the older 3.0 TD splits into the 4JH1-TC and the earlier 4JX1 (RHF5 VIEK). Confirm yours by VIN or engine number before you buy. If you are weighing up the whole engine rather than just the turbo, it is worth comparing a used Isuzu engine at the same time so you can plan the full job.
Variable-geometry symptoms — power loss, limp mode, whistling, black smoke — are often the actuator or a stuck vane rather than a completely dead turbo, and worn injectors or a blocked DPF can mimic exactly the same signs. Across all the Isuzu diesels, oil starvation from a blocked feed pipe is another common killer. It pays to have the fault properly diagnosed before committing to a full unit, and to compare a used or reconditioned turbo against an actuator or clean-and-recon. Engine Finder is a marketplace — submit one free quote request and verified Isuzu turbo suppliers across South Africa come back to you with prices, warranties and availability.
Doing a bigger job than just the turbo? Compare quotes on these too.
It depends on the engine and condition. The 2.5 TD (4JA1) is the most affordable at roughly R4,750 – R4,995, and it is well supported with used pull-offs. The flagship 3.0 D-Teq / DDi (4JJ1) spans a wide band from around R7,497 for a tested used unit up to about R14,995 for new aftermarket. The older 3.0 TD (4JH1-TC / 4JX1) and the newest 1.9 Ddi (RZ4E) are best sourced on a quote — the older engine has thinner used stock and the 1.9 is too new to have a settled used price. Submit one quote request and compare verified suppliers for your exact model.
The most common cause on the variable-geometry (VGS / VGT) units — the later 3.0 D-Teq / DDi (4JJ1) and the newer 1.9 Ddi — is the variable vanes and actuator sticking with carbon and soot. That shows up as power loss, going into limp mode, a whistling or whining noise, or black smoke. Across all the diesels, oil starvation from a blocked feed pipe or a stretched service interval is another common killer. Sometimes it is just the actuator or a clean and recon rather than a whole turbo, and worn injectors or a blocked DPF can mimic the same symptoms, so it is worth having it properly diagnosed before buying a full unit.
The 4JJ1 3.0 D-Teq / DDi uses an IHI RHV5 "VIEZ" turbo (part 8980115293) on the first generation, with later builds moving to the IHI RHV4 variable-geometry (VGS) unit — it is the flagship SA bakkie turbo and the highest-demand Isuzu unit, sitting at a higher ticket. The older 4JA1 2.5 TD uses a simpler IHI RHF4 (part 8972402101), which is the cheaper, high-volume choice and well supported with used pull-offs (note the newer D-Teq 2.5 is the 4JK1 with its own VGS turbo). Give your model, year and engine when you request a quote so suppliers match the correct turbo, and confirm the exact part number by VIN.
All three are common in SA. A used pull-off is the cheapest and fine if it has been tested and comes with some warranty. A reconditioned or exchange unit (you surrender your old core) is usually quote-only and carries a longer warranty. New aftermarket or OEM-grade units cost the most but are brand new. On the D-Teq and 1.9 Ddi VNT units especially, check whether the electronic actuator is included and calibrated. Watch out for cheap "CHRA core" listings — a bare centre cartridge is not a complete turbo.
Confirm it by VIN or engine number — Isuzu uses more than one part number and housing across the range. The 3.0 D-Teq (4JJ1) is IHI RHV5 "VIEZ" (8980115293) on gen-1 and IHI RHV4 VGS on later builds, the older 2.5 TD (4JA1) is IHI RHF4 (8972402101) while the newer 2.5 D-Teq (4JK1) has its own VGS/RHV4 unit, the older 3.0 TD splits into 4JH1-TC and 4JX1 (RHF5 VIEK), and the newest 1.9 Ddi (RZ4E) is an IHI VGT. Tell us your model, year and engine (and ideally your VIN) when you request a quote and verified suppliers will confirm the exact unit before you commit.
It varies by supplier. Tested used units typically carry a 30–90 day warranty; reconditioned and new aftermarket units usually 6–12 months. Because a failed turbo can be caused by oil-supply or DPF issues, a good supplier will also advise on fitting the correct oil feed/return and priming the unit. Always get the warranty terms in writing and confirm whether fitment at a qualified workshop is required.
Send us your Isuzu model, year and engine — and your VIN if you have it. We'll get verified suppliers to quote you on used, reconditioned and new-aftermarket turbochargers.
