Land Rover Discovery Block Heater Guide
1995–2026
Find the part for your engine
Check the engine size on your vehicle documents or under-hood label. Choose it explicitly even when only one option appears.
Already have a factory heater? A missing power cord may be all you need. Match the connector before ordering.
View the full engine and installation tableCatalog candidates for the Land Rover Discovery are grouped by engine below. Check the source review for the exact application before choosing a heater or cord; shared engine size alone does not confirm fitment.
Factory availability
Dealer-installed accessory in Canada on most years and trims
Cord location
Most installs route the cord to the front grille or bumper area, driver's side. Check for an existing coiled cord before buying anything.
Land Rover Discovery engines & block heater part numbers
Engine list built from Natural Resources Canada model-year data. Part numbers are catalog candidates unless a source review is shown for that application. Confirm the exact engine code, model year and installation port before ordering; an Amazon listing match does not confirm vehicle fitment.
| Engine | Years | Zerostart kit | Cord | Kat's heater | Install location |
|---|---|---|---|---|---|
| 3.9L 8-cyl Manufacturer-listed application Manufacturer lists Land Rover V8 3.9/4.0/4.2/4.6L for 1987–2004; 1-1/2-inch core-plug heater, left-center installation, element at 12 o’clock. | 1995–1995 | 3100039(1-1/2" bore) | 3600006 | — | LC(12 o’clock position) |
| 4L 8-cyl Manufacturer-listed application Manufacturer lists Land Rover V8 3.9/4.0/4.2/4.6L for 1987–2004; 1-1/2-inch core-plug heater, left-center installation, element at 12 o’clock. | 1996–2002 | 3100039(1-1/2" bore) | 3600006 | — | LC(12 o’clock position) |
| 4.6L 8-cyl | 2003–2004 | 3100039Engine-family lead — confirm exact engine code and model year.(1-1/2" bore) | 3600006 | — | LC(12 o'clock position) |
| 2L 4-cyl | 2016–2026 | No aftermarket listing — use the genuine Land Rover dealer kit | |||
| 3L 6-cyl | 2019–2026 | No aftermarket listing — use the genuine Land Rover dealer kit | |||
| 3L 6-cyl diesel | 2019–2020 | No aftermarket listing — use the genuine Land Rover dealer kit | |||
Reading the numbers: Zerostart 31/35- is the heater kit, 36- the detachable cordset ("lit" glows when the outlet is live). Kat's 11xxx is an element, 28xxx a cordset, 24xxx a pad. Location codes are the manufacturer's (LF = left front of block).
Find the heater or replacement cord
Match the exact part, engine and connector before buying. Search links are discovery links, not confirmed fits.
Amazon buying options
Zerostart 3100039
Catalog starting point: confirm exact engine code, year and installation with the manufacturer.
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Amazon buying options
Zerostart 3600006 replacement cordset, 5 ft
Confirm the exact specification and application in the listing before ordering.
Cord / harness only — no heating element.
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What it costs to plug in a Land Rover Discovery — and what it saves
No supplier lists a wattage for every Discovery element, so this uses the 1000 W figure typical of this body style. Natural Resources Canada recommends a timer that runs the heater two hours before you drive rather than all night — that is what the numbers below assume.
| Province | ¢/kWh | Cost per 2 h plug-in | Full winter (120 nights) | Net per day |
|---|---|---|---|---|
| Quebec | 7.0 | $0.14 | $16.80 | +$0.25 |
| Manitoba | 10.2 | $0.20 | $24.48 | +$0.19 |
| Ontario (avg TOU) | 12.8 | $0.26 | $30.72 | +$0.14 |
| Alberta | 14.0 | $0.28 | $33.60 | +$0.11 |
| Saskatchewan | 15.5 | $0.31 | $37.20 | +$0.08 |
| Nova Scotia | 17.9 | $0.36 | $42.96 | +$0.04 |
Natural Resources Canada rates the Land Rover Discovery at 12.7 L/100 km in city driving (median across 1995–2026 model years). On a 20 km winter commute that is about 2.5 L a day. NRCan measured that at −20 °C a block heater improves overall fuel economy by as much as 10% — roughly 0.25 L, or $0.39 of gasoline at $1.55/L. On a single short trip at −25 °C the saving can reach 25%. In most provinces the electricity costs less than the fuel it saves; in the priciest it roughly breaks even, and you still get the wear, defrost and cabin-heat benefits.
Fuel figures: Natural Resources Canada Fuel Consumption Ratings and Block Heaters Save Fuel and Help the Environment. Electricity rates are approximate 2026 residential averages — run your own numbers in the cost calculator.
Cold-weather recalls on the Land Rover Discovery
No block-heater recall is on file for the Discovery, but Transport Canada has recorded cold-weather and cooling-system recalls worth checking before you install anything.
On certain vehicles equipped with the Active Cornering Enhancement (ACE) system, the left side engine idler pulley can fracture and ultimately fail. This would cause the pulley to throw off the serpentine belt, which can result in loss of auxiliary functions (power steering, water pump, alternator, air conditioning and ACE). Loss of steering assist would require increased steering effort and create the risk of a vehicle crash. Correction: Plastic idler pulley will be removed and replaced with a newly designed steel pulley.
On certain vehicles, vibration in the Active Cornering Enhancement (ACE) high pressure hydraulic tubing can result in a leak and loss of system fluid. Low fluid levels can result in system pump failure which will throw off the auxiliary drive belt, resulting in a loss of engine auxiliary functions (power steering, water pump, alternator and air conditioning). Should this occur, steering effort will be increased, which may increase the risk of a vehicle crash. Correction: Dealers will install new specification hydraulic tubing.
On certain vehicles equipped with Active Cornering Enhancement (ACE), the high-pressure hydraulic pipe that runs from the ACE pump to the ACE valve block could fracture at its union with the pump. This will result in a loss of hydraulic fluid. A low fluid level can subsequently result in system pump failure which will throw off the auxiliary drive belt, resulting in a loss of engine auxiliary functions (power steering assist, water pump, alternator, and air conditioning). In extreme circumstances, there is a possibility that the hydraulic fluid could ignite, resulting in an engine compartment fire. Correction: Dealers will install new hydraulic tubing.
Source: Transport Canada Vehicle Recalls Database. Look up your VIN in the official recall search — this list is filtered to block-heater and cold-weather items and is not the vehicle's full recall history.
No tools? The stick-on option
If you'd rather skip the install entirely, a magnetic heater grips any flat steel surface — oil pan, block, transmission pan — and moves between vehicles. Check that the Discovery's oil pan is steel first: a magnet won't hold on aluminum or composite pans.
Amazon buying options
Zerostart 3400017 magnetic heater, 200 W
A magnetic surface heater from Zerostart. Grips any flat steel surface — oil pan, transmission pan, small-engine sump. CSA certified.
Match the surface material, size and manufacturer limits. This is not vehicle-specific fitment.
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Part reference
Digital multimeter with resistance and continuity
The definitive block-heater test tool. Any meter with an ohms range and audible continuity can isolate a dead cord from a failed element.
Confirm the exact specification and application in the listing before ordering.
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
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First: check whether you already have one
Canadian-market vehicles are often fitted at the port or dealer and then forgotten by the next owner, so check the cord location above before you buy anything. If a cord is there, test it — a dead element and a dead cord look identical from the outside.
If you need one installed
Budget $40–$120 CAD for the part plus about an hour of labour, and book in October — Prairie shop calendars fill after the first cold snap.
FAQ
Does the Land Rover Discovery come with a block heater?
Dealer-installed accessory in Canada on most years and trims. Check behind the grille for a coiled cord before buying anything — many Canadian-market vehicles have a heater installed that the owner never knew about.
What block heater fits a Land Rover Discovery?
The recommended setup is a frost plug (cartridge) block heater (typically 400 W). Catalog candidates for the Land Rover Discovery are grouped by engine below. Check the source review for the exact application before choosing a heater or cord; shared engine size alone does not confirm fitment.
What is the block heater part number for a Land Rover Discovery?
3.9L 8-cyl: Zerostart kit 3100039 with cord 3600006; 4L 8-cyl: Zerostart kit 3100039 with cord 3600006; 4.6L 8-cyl: Zerostart kit 3100039 with cord 3600006. Confirm displacement and model year against the fitment table before ordering.
Where is the block heater cord on a Land Rover Discovery?
Most installs route the cord to the front grille or bumper area, driver's side. Check for an existing coiled cord before buying anything.
How much does it cost to plug in a Land Rover Discovery?
At 1000 W on a two-hour timer the heater uses about 2.00 kWh a night — roughly 26¢ in Ontario, 28¢ in Alberta and 14¢ in Quebec. Over a 120-night winter that is about $33.60 at Alberta rates.
Does a block heater save fuel on a Land Rover Discovery?
Yes. Natural Resources Canada rates the Discovery at 12.7 L/100 km in city driving, and found that at −20 °C a block heater improves overall fuel economy by as much as 10% — about 0.25 L on a 20 km winter commute. On a single short trip at −25 °C the saving can reach 25%. In most provinces that is worth more than the electricity it costs.
Should you plug in tonight?
Enter your city — we check tonight's forecast and give you a straight answer based on the temperature thresholds that matter.
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