Reconditioned · Used · Rebuilt
306DT 3.0 TDV6 Diesel Engine for Sale
The 306DT is the 3.0-litre V6 twin-turbo diesel fitted to the Range Rover Sport, Range Rover Vogue, Discovery 4 & 5 and several Jaguars from 2009 onwards — and the engine we rebuild more than any other. Every unit we supply is stripped, rebuilt with upgraded crank components, tested, and covered by a 12-month / 12,000-mile parts-and-labour warranty.
Which Vehicles Use the 306DT
Variants differ by year and model — we confirm the exact variant from your reg before quoting.
| Vehicle | Years | Variant / output | Matching engines |
|---|---|---|---|
| Range Rover Sport (L320 / L494) | 2009–2018 | SDV6 245–306 bhp | View engines → |
| Range Rover Vogue (L405) | 2012–2018 | TDV6 258 bhp | View engines → |
| Land Rover Discovery 4 | 2009–2016 | SDV6 245–256 bhp | View engines → |
| Land Rover Discovery 5 | 2017–2020 | TD6 258 bhp | View engines → |
| Jaguar XF / XJ / F-PACE | 2009–2020 | 3.0D 275–300 bhp | View engines → |
What's Replaced When We Recondition a 306DT
Unless your quote says otherwise, a reconditioned engine is supplied as a bare assembly — block, head(s) and sump — rebuilt with the following as standard. Your original ancillaries are refitted, and we tell you at the health check if any are worn, with an itemised list to approve or decline before we fit them.
- Cylinder head(s) — pressure-tested, with refaced valves and seats
- Valve stem seals — new
- Head gasket(s) — new, with new head bolts
- Piston rings — new
- Main & big-end bearings — new
- Crankshaft — inspected, and reground or replaced as required
- Oil pump — new
- Timing belt or chain kit — new
- Testing — pressure and compression tested; results supplied in writing
- Ancillaries — your originals refitted; anything worn is itemised for you to approve or decline
Known 306DT Failure Modes
Crankshaft failure
The 306DT's signature fault: crank and bearing wear, often with little warning beyond a knock or sudden loss of oil pressure. Continuing to drive usually destroys the block.
Read the symptoms guide →Turbo & oil feed issues
Restricted oil feed pipes can starve the turbos; whining, smoke or oil consumption are the early signs. We inspect and replace feed lines during every rebuild.
Get it assessed →EGR & cooler faults
Coolant loss or limp mode can trace back to EGR cooler failure — sometimes misdiagnosed as head-gasket trouble. Diagnosis first; replacement only if it's really needed.
Book diagnostics →306DT Prices & Lead Times
| Compare | Most popularReconditioned | Low-Mileage Used | Rebuild Your Engine |
|---|---|---|---|
| Fitted, from | £2,500–£5,000 | £1,000–£2,500 | £2,000–£5,000 |
| VAT | Included | Included | Included |
| Warranty | 12 mo / 12,000 mi | 12 mo / 12,000 mi | 12 mo / 12,000 mi |
| Lead time | 3–5 days | In stock: 2 days | 2–3 weeks |
306DT Questions
How much does a replacement 306DT engine cost, fitted?
Fitted at our workshop, a low-mileage used 306DT typically runs £1,000–£2,500, a reconditioned unit £2,500–£5,000, and a full rebuild of your own engine £2,000–£5,000. The exact figure depends on the variant and what the strip-down reveals. All our prices include VAT (GB 502 3788 04). Enter your reg above for a fixed written quote.
Do you supply the 306DT on its own?
No. Every engine we supply is fitted by us, at our own workshop in Grays, Essex. That is deliberate: one party is then responsible for both the engine and the fitting, which is what makes the warranty worth having. If you cannot get to us, we can collect your vehicle and deliver it back.
What warranty comes with a 306DT?
12 months or 12,000 miles, whichever comes first — parts and labour, in writing. Servicing can be done by us or by any established professional garage; you are not required to come back to us.
My 306DT is knocking — is it repairable?
Sometimes. If it's caught early, a rebuild of your own engine can be viable. If the crank has let go at speed, replacement is usually the economic answer. Stop driving it and get it diagnosed — running a knocking 306DT turns a repairable engine into scrap.
Do you upgrade the known weak points?
Yes. Our reconditioned 306DT units are built with an uprated bearing specification and a new oil pump as standard, addressing the cause of the common failure rather than repeating it.
Will a 306DT from a different model fit my car?
Often, with the right conversion of ancillaries — but variants differ across years and models. Give us your reg and we'll confirm the correct unit; that's exactly what the check is for.
What a Fitted 306DT Includes
Every 306DT we supply is fitted by us at our Grays, Essex workshop — never sold loose. Your price covers the whole job:
- The engine — reconditioned, tested low-mileage used, or your own unit rebuilt, matched to your exact variant
- Removal & fitting — the old engine out, the replacement in, by JLR specialists
- Fluids, filters & adaptation — the parts and coding the job actually needs, not billed as extras
- A documented road test — before the car comes back to you
- 12 months / 12,000 miles, parts & labour — one warranty covering the engine and the workmanship
Turnaround depends on the engine — see the lead times in the options above. VAT is included in every price.
Not local to Essex? It makes no difference to the engine or the warranty. We collect your vehicle, fit the 306DT here, and return it — wherever you are in the UK. Here's how nationwide collection & delivery works.
Your 306DT Quote in Two Hours
A fixed written price to supply and fit it — from the people who'll actually build your engine. VAT included.
Get My 306DT Quote →Or call 02033 180532 · Mon–Fri 8am–6pm · Sat 9am–1pm