ATV & UTV Block Heaters: Polaris, Can-Am, Honda
Plowing the lane, feeding cattle, checking the trapline — in most of Canada an ATV or side-by-side works harder in January than July. Yet almost none of them leave the factory with a block heater, and the frost plugs on a modern liquid-cooled quad are buried where no wrench will ever reach.
The working answers are three: the OEM accessory heater kit if your machine has one (Polaris and Can-Am both sell them for their utility lines), a universal silicone pad heater on the crankcase or sump for everything else, and — doing more than either — a warm, fully charged battery.
What fits, by application
Part numbers from the Zerostart / Phillips & Temro and Kat's application guides where a listing exists. Numbers are occasionally superseded — confirm against a current catalog before ordering.
Universal: liquid- or air-cooled ATV/UTV engines
Pad goes on bare metal of the sump or lower crankcase — never on plastic, exhaust, or the coolant reservoir.
| Part no. | Watts | Volts | Size | Type | Repl. cord |
|---|---|---|---|---|---|
| 24025 | 25 W | 120 V | 1" × 5" | Silicone pad | — |
| 24050 | 50 W | 120 V | 2" × 5" | Silicone pad | — |
| 24100 | 100 W | 120 V | 4" × 5" | Silicone pad | — |
Most ATV engines hold 2 L of oil or less, so 25–50 W is the right size; a big-bore side-by-side (Ranger XP 1000, Defender HD10) can take 100 W on the sump. Degrease the surface, bond the pad per its instructions, and route the cord away from the exhaust and suspension travel. An hour or two of plug-in time is plenty for this little oil.
OEM accessory engine heater kits
Polaris sells engine heater kits for the Ranger and Sportsman utility lines, and BRP sells one for the Can-Am Defender — thermostat-controlled elements that install against the engine cases, with a plug that exits near the rack or bumper. Order by VIN from a dealer or the brands' online accessory catalogs; they're model-year specific. If you plow snow for pay, the OEM kit is worth it purely for the warranty-safe install.
Shop heaters sized for this equipment
Check the application table for your exact engine. Cords, heater elements and surface pads are separate products.
Part reference
Kat's 24025
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
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Part reference
Kat's 24050
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
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Part reference
Kat's 24100
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
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The battery is the real cold-start problem
A modern EFI quad will fire at -30°C without any engine heat — if the starter spins fast enough. The small powersports batteries (often 12–18 Ah) lose the most cranking capacity in the cold, and a quad parked outside sits at ambient. A battery blanket wrapped around the battery box plus a smart float charger through the winter does more for reliable starts than any engine heater. If the machine lives far from an outlet, pull the battery indoors between uses.
Oil finishes the job: run the coldest grade your manual allows (0W-40 synthetic is factory fill for many Polaris and Can-Am machines) and let the engine idle a full minute before loading it — the gearbox and diff fluids are still frozen even after the engine catches.
Belt-drive machines need a warm-up too
CVT belts turn brittle in deep cold, and a hard launch with a frozen belt is how belts get glazed or thrown. After a cold start, let the machine creep for the first few hundred metres so the belt and clutches warm gradually. Some owners aim a pad heater's warmth at the CVT cover instead of the sump for exactly this reason — on a machine used for short plow runs, the belt is often the first thing to complain.
FAQ
Can you put a block heater on an ATV?
Not a frost-plug one — the plugs on a modern quad are inaccessible. The practical options are a universal silicone pad heater (25–100 W) bonded to the sump or crankcase, or the OEM accessory engine heater kit where the manufacturer offers one.
Is there a block heater for a Can-Am Defender?
BRP sells a factory engine heater accessory kit for the Defender, ordered by model year through a dealer or the BRP parts catalog. The universal alternative is a 50–100 W pad heater on the bare metal of the HD8/HD10's sump.
Is there a block heater for a Polaris Ranger?
Polaris lists engine heater kits as accessories for the Ranger line, including the XP 1000 — dealer-ordered, model-specific. A 100 W pad heater on the sump is the aftermarket route and works on any model year.
How do I start my ATV in extreme cold?
Warm battery first (blanket + float charger, or bring the battery indoors), thinnest oil the manual allows, a pad heater if it lives outside, and a gentle first kilometre for the CVT belt. EFI handles the fuel side by itself — no choke ritual needed.
Compare buying options
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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Amazon buying options
Canadian Polar Pad CP32 Cub ATV pad, 75 W
A compact 2×3 in pad intended for ATV and small-engine sumps. Match the surface, oil capacity and manufacturer installation instructions.
Match the surface material, size and manufacturer limits. This is not vehicle-specific fitment.
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Part reference
Universal silicone pan heater pad, 150 W (4×5 in)
Self-adhesive silicone pad with a thermostat — bonds permanently to a clean steel or aluminum pan and warms the oil itself. The budget route to easier -30 starts.
Match the surface material, size and manufacturer limits. This is not vehicle-specific fitment.
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
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Battery Tender Junior, 800 mA
The classic powersports maintainer — the one sled and bike shops hand you with the quick-connect pigtail. 800 mA float charging for lead-acid and lithium.
Confirm the exact specification and application in the listing before ordering.
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Block heater fitment for the vehicle in the driveway
Same winter, different engine. These pages carry the catalogued part numbers, wattage and cord location per model.
Should you plug in tonight?
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