ERR6066G | Defender & Discovery 2 Td5 Glow Plug Set – Beru GN985
Set of 4 Beru GN985 glow plugs for Defender Td5 and Discovery 2 Td5 models. These are quality Beru plugs for renewing the full engine set, replacing Land Rover part number ERR6066 and supporting correct preheat and after-glow operation.
- Fits Defender Td5; Discovery 2 Td5
- Supplied as a complete set of 4 glow plugs
- Beru GN985 reference glow plugs
- Replaces Land Rover part number ERR6066
- Preheat and after-glow type for Td5 engine management systems
£67.67 inc. UK VAT
Normal Stock Item
Family-run Land Rover parts specialist supplying Genuine, OEM & trusted aftermarket parts.
Free mainland UK shipping £99+ · Express options available
Worldwide Tracked Delivery Available
Td5 glow plug set for Defender and Discovery 2
These Beru GN985 glow plugs fit Land Rover Td5 engines in Defender and Discovery 2 models. Supplied as a set of 4, they are the correct quantity for renewing the engine set and replace Land Rover part number ERR6066.
The Td5 engine will often start even with weak glow plugs, but they are still part of the cold-start and early running strategy. Good glow plugs help with smoother cold starts, cleaner initial running and correct preheat / after-glow operation while the engine comes up to temperature.
Beru GN985 is the Beru reference for this Td5 glow plug. The plugs use an 11V after-glow capable design and are suitable for the Td5 glow plug control system.
For other Td5 engine service and repair parts, see our Defender Td5 engine parts and Discovery 2 Td5 engine parts sections.
Specification
| Required quantity | 4 |
| Thread Size | M10×1.0 |
| Length [mm] | 107 |
| Voltage [V] | 11 |
| Spanner Size | 10 mm |
| Glow Plug Design | After-glow capable, pencil-type glow plug |
| Fitting Depth [mm] | 25 |
| Connector type | 4 mm pin |
| Current Strength [A] | 16 |
| Tightening torque to [Nm] | 20 |
| Tightening torque from [Nm] | 15 |
| Cone Pitch | 63 |
| Failure Moment [Nm] | 35 |
| Item number | GN985 |
| Manufacturer | BERU |
| EAN number | 4014427057185 |
| Reference number OEM | ERR6066 |
Frequently Asked Questions
There are mixed opinions on this, with some suggesting Td5 glow plugs aren’t needed at all. While the engine may start even in cold weather, Td5 glow plugs are not just for starting. They continue to operate until the coolant reaches around 20°C, which can take several minutes, ensuring optimum combustion and smooth running.
Because Td5 glow plugs operate until the coolant reaches 20°C (often several minutes), they need to withstand continuous operation. Cheap glow plugs simply can’t cope, leading to early failure and poor engine performance. OEM Beru plugs (ERR6066G) are designed to last.
The Td5 glow plug dash light is controlled by the ECU/BCU and isn’t directly linked to plug operation like on older Land Rovers. The glow plugs continue running until coolant temperature reaches 20°C, ensuring reliable starting and complete combustion.
| Weight | 0.35 kg |
|---|---|
| Dimensions | 20 × 13 × 3 cm |
Brand
BERU
Leading technology and innovation
Passion about progress and bold innovation has fuelled the BERU® success. 21 globally-networked technology centres enable to bring breakthroughs in advanced technology, innovation and OE matching quality to the aftermarket. Hundreds of patents have been secured to bring advanced technologies for cleaner engines and enhanced safety and comfort.The BERU® Brand
Diesel cold start systems are manufactured in the same facilities which provide products to the oem’s. Almost all oe-manufacturers of cars, commercial vehicles and engines are borgwarner customers. For the aftermarket, Federal-Mogul supplies many well-known distributors and workshop operators. The main production facilities for BERU® glow plugs and ignition coils are located in Ludwigsburg, Germany.
1 review for ERR6066G | Defender & Discovery 2 Td5 Glow Plug Set – Beru GN985
Only logged in customers who have purchased this product may leave a review.
Twinwoods 4x4 ships Land Rover parts across the UK and around the world. We regularly send parts overseas and use trusted tracked courier services so UK and international customers can order with confidence.
Standard UK shipments are normally sent with DPD. UK orders containing oils or fluids are normally sent with DHL where required, because some carriers restrict liquid shipments.
Worldwide delivery is available through DPD and DHL Express, depending on the destination, parcel size, weight and available courier services. Add the parts you need to your basket, enter your delivery address, and the checkout will show the available delivery options and prices before payment.
Free mainland UK postage and packaging is available on eligible orders over £99, subject to our delivery terms and conditions.
- Return within 14 days of delivery of your order.
- Items must be unused, unopened and in original packaging.
- Faulty items: we’ll cover return postage—keep your receipt.
- Refunds & Replacements are dealt with once the original item is received and inspected.
Returns – quick FAQs
How long do I have to return an item?
Who pays return postage?
What items are non-returnable?
How do I start a return?
Please include your order number and a brief reason for the return.
Buy with confidence: all new parts sold by Twinwoods 4x4 include at least 12 months manufacturer warranty against defects in materials and workmanship under normal use.
Some products and brands may include a longer warranty period where this is provided by the manufacturer. Where applicable, this will normally be stated on the individual product page or covered by the manufacturer’s own warranty terms.
Warranty cover applies to manufacturing defects. It does not cover misuse, incorrect fitting, competition use unless stated, contamination, modification, damage during installation, normal wear and tear, or failure caused by an unrelated vehicle fault. For certain components, proof of professional fitment may be required.
Warranty claims may require the part to be returned for inspection and/or supplier testing before the claim is accepted. Any advance replacement is discretionary.
Warranty remedies relate to the part itself, meaning repair or replacement, or refund if those are not possible. Warranty does not cover labour, removal or refitting, diagnostics, consumables, travel or other incidental costs.
This warranty is in addition to your legal rights and does not reduce those rights.
For full details, please see our Terms and Conditions.

Verified owner Tom (verified owner) –
Excellent advice and service.