Reconditioned Turbo Toyota

Toyota diesel turbos rarely fail in isolation: the root cause is almost always elsewhere

On Toyota D-4D and D-CAT engines, the turbo is rarely the first component to fail. What brings it down is everything around it: engine oil left in service too long, a clogged diesel particulate filter raising back-pressure, or a head gasket leaking combustion gases and compromising CHRA lubrication. On the 1KD-FTV (3.0 D-4D, widely fitted to the Hilux and Land Cruiser), deterioration of the turbo oil feed line is a well-documented weak point: carbonised deposits eventually starve the bearings of adequate oil flow. On the 2AD-FTV and 2AD-FHV (2.2 D-4D and 2.2 D-CAT, Avensis, Auris, RAV4, Verso), the variable geometry is prone to fouling that jams the vanes, causing persistent black smoke, a loss of boost pressure and erratic low-rev engine behaviour. Before replacing the turbo, the root cause must be identified and rectified — otherwise the new or reconditioned unit will suffer exactly the same fate.

Engine codes that make all the difference to identification

The Toyota catalogue presents a genuine challenge: several engines share the same D-4D commercial designation yet are fitted with different turbos depending on the exact engine code. The 2.5 D-4D is available in 102 hp, 120 hp and 144 hp versions on the Hilux and Land Cruiser, each with different manufacturer references (VB31, VB40, VB42, series 172010L07x or 1720147011). The 2.2 D-4D comes in 136 hp, 150 hp and 177 hp variants, and the 177 hp D-CAT variant (2AD-FHV) does not use the same turbo as the 2AD-FTV of the same quoted output. On the Aygo, C-HR and certain Yaris models, the 1.2 Turbo petrol engine (8NR-FTS) follows an entirely different logic from the diesel units. The manufacturer reference stamped on the turbo — or cross-referenced equivalents (e.g. 801891-5003S, 17201-27030A, series 9B0xx) — remains the only reliable starting point for confirming compatibility.

Overview of models covered

The range covers the full Toyota turbocharged vehicle parc: Hilux and Land Cruiser account for the greatest number of references (9 each), followed by Corolla, Hiace, Avensis, Auris, RAV4 and more recent models such as the C-HR and Proace. Turbos available are either new or reconditioned depending on the reference, with the sales method (outright sale or exchange) indicated on each product page. The 4.5 D V8 (1VD-FTV) in the Land Cruiser and the 4.0 V6 petrol (1GR-FE) cover the most demanding towing and load applications, where turbo thermal stress is particularly high.