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4PCS 303-1AH-C-R1-U01 12V Relay, Micro ISO 280 4-Pin SPST 20A, Resistor-Suppressed — Fits Polaris RZR/Ranger/General/Sportsman/ACE (2010-2020) Cooling Fan & Fuel Pump — Replaces OE 4016819, 4011283 Product Description Specs + OE cross-refs: 12VDC automotive micro relay (ISO 280 footprint), SPST (1 Form A) 4-pin, 20A 14V; high-temp design; flux-tight enclosure; integrated coil suppression R1 (resistor). Compatible with OE 4016819, 4011283; cross-reference: compatible with HFV11/12-HS-R(257).
Operation & install location: Fits the fuse/relay box on applicable machines; typically controls cooling fan, fuel pump, horn and lights. ISO 280 terminals (#30 common, #87 NO output, #85/#86 coil). R1-type coil is not polarity-sensitive (diode versions are). Seat fully in the panel, then test.
Compatible with Polaris RZR (by years): Compatible with RZR 570 2012–2019, RZR 800 (all models) 2010–2014, RZR 900 (all models) 2011–2019, RZR 1000 2014–2019, RZR XP Turbo 2015–2020; verify OE 4016819/4011283 before purchase.
Compatible with Polaris Ranger (by years): Compatible with Ranger Crew 500/570/800 2010–2020; Ranger 1000/Ranger Crew 1000 2015–2020; Ranger XP 1000 2017–2020; confirm relay cavity and OE number match.
Compatible with Polaris General & ACE (by years): Compatible with General 1000/General 4 1000 2016–2020 and ACE 2017–2018 w OE 4016819/4011283 is specified.
Compatible with Polaris Sportsman (by years): Compatible with Sportsman 450/550/570 2011–2020 and Sportsman 850/1000 / XP 1000 2011–2020; check your parts diagram for the OE number above.
Common symptoms this fixes: Cooling fan not engaging, intermittent fan operation, no fuel-pump prime, inoperative horn/lights tied to this relay cavity; replacing a weak relay restores normal operation when the rest of the circuit is OK.
Complementary parts (for related fixes): If the fan motor or module has failed, pair this relay with compatible fan assemblies such as 2412447 / 2410366 / 2410901 / 2410288 / 2204192 (model-specific); these are frequently replaced together when the fan won’t spin under load.
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