Jeep Wrangler Block Heater Guide
2007–2026
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 tableWranglers live outside by definition. The Pentastar V6 has a proper heater fitment, and soft-top owners in real cold add a battery blanket — cabin cold soak is brutal on batteries.
Factory availability
Factory option in Canada
Cord location
Factory cord usually near the front bumper, driver's side.
Jeep Wrangler 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 |
|---|---|---|---|---|---|
| 3.8L 6-cyl | 2007–2011 | — | — | 11486Catalog candidate — confirm exact engine code and model year.+ cord 28400 | — |
| 3.6L 6-cyl | 2012–2026 | 3100128Engine-family lead — confirm exact engine code and model year. | 3600120 | 11814Catalog candidate — confirm exact engine code and model year.400 W+ cord 28814 | RR(N/A N/A position) |
| 2L 4-cyl | 2019–2026 | — | — | 11812Catalog candidate — confirm exact engine code and model year.+ cord 28812 | — |
| 3L 6-cyl diesel | 2020–2023 | No aftermarket listing — use the genuine Jeep dealer kit | |||
| 6.4L 8-cyl | 2022–2026 | No aftermarket listing — use the genuine Jeep 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.
Part reference
Kat's 11486
Catalog starting point: confirm exact engine code, year and installation with the manufacturer.
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
Part reference
Zerostart 3100128
Catalog starting point: confirm exact engine code, year and installation with the manufacturer.
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
Part reference
Zerostart 3600120
Legacy fitment associations are not independently verified vehicle-specific purchase recommendations.
Cord / harness only — no heating element.
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
Amazon buying options
Kat's 11814 cartridge heater
Catalog starting point: confirm exact engine code, year and installation with the manufacturer.
Choose your Amazon store
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
Amazon buying options
Kat's 11812 cartridge heater
Catalog starting point: confirm exact engine code, year and installation with the manufacturer.
Choose your Amazon store
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
What it costs to plug in a Jeep Wrangler — and what it saves
The catalogued element for the Wrangler draws 400 W. 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 | $0.06 | $6.72 | +$0.37 |
| Manitoba | 10.2 | $0.08 | $9.79 | +$0.35 |
| Ontario (avg TOU) | 12.8 | $0.10 | $12.29 | +$0.33 |
| Alberta | 14.0 | $0.11 | $13.44 | +$0.32 |
| Saskatchewan | 15.5 | $0.12 | $14.88 | +$0.30 |
| Nova Scotia | 17.9 | $0.14 | $17.18 | +$0.28 |
Natural Resources Canada rates the Jeep Wrangler at 13.8 L/100 km in city driving (median across 2007–2026 model years). On a 20 km winter commute that is about 2.8 L a day. NRCan measured that at −20 °C a block heater improves overall fuel economy by as much as 10% — roughly 0.28 L, or $0.43 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.
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 Wrangler'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.
Choose your Amazon store
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
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.
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
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 Jeep Wrangler come with a block heater?
Factory option in Canada. 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 Jeep Wrangler?
The recommended setup is a frost plug (cartridge) block heater (typically 400 W). Wranglers live outside by definition. The Pentastar V6 has a proper heater fitment, and soft-top owners in real cold add a battery blanket — cabin cold soak is brutal on batteries.
What is the block heater part number for a Jeep Wrangler?
3.8L 6-cyl: Kat's heater 11486 with cord 28400; 3.6L 6-cyl: Zerostart kit 3100128 with cord 3600120 (Kat's 11814); 2L 4-cyl: Kat's heater 11812 with cord 28812. Confirm displacement and model year against the fitment table before ordering.
Where is the block heater cord on a Jeep Wrangler?
Factory cord usually near the front bumper, driver's side.
How much does it cost to plug in a Jeep Wrangler?
At 400 W on a two-hour timer the heater uses about 0.80 kWh a night — roughly 10¢ in Ontario, 11¢ in Alberta and 6¢ in Quebec. Over a 120-night winter that is about $13.44 at Alberta rates.
Does a block heater save fuel on a Jeep Wrangler?
Yes. Natural Resources Canada rates the Wrangler at 13.8 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 0.28 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.
More Jeep models
Similar vehicles