2-Pack 12V Micro ISO 280 4-Pin SPST Relay 20A with Resistor Compatible with Polaris RZR Ranger General Sportsman Slingshot Fuse Box Replaces 4016819 4011283 303-1AH-S-R1 Ultra Micro Plug-in

12V Micro ISO 280 4-Pin SPST Relay with ResistorCompact ultra micro plug-in relay for automotive power distribution. Built on the ISO 280 footprint with sealed construction and a built-in resistor to tame coil transients.SpecificationsCoil Voltage: 12 VDCContact Form: SPST (1 Form A), Normally OpenContact Rating: 20 A @ 14 VDC (resistive)Approx. Coil Power: 0.96 W | Coil Resistance: ≈150 ΩPackage: Micro ISO 280, 4 terminals, sealed/washableUse & InstallationDesigned for the fuse box / power distribution center. Typical circuits include cooling fan, fuel pump, EPS/power steering, ECU main and lighting (varies by machine). Swap one-for-one in the same slot as the removed relay.Replaces / Cross-ReferencesReplaces: 4016819, 4011283 (vehicle reference part numbers)Reference Number: 303-1AH-S-R1Compatible with VH28 series, Compatible with G8VL series, Compatible with HFV11 series (match coil voltage and contact form)Compatibility Summary (North America)Compatible with Polaris RZR (570/800/900/1000 model years as listed in bullets), Compatible with Polaris Ranger (XP 800/900 years listed), Compatible with Polaris Sportsman 570, Compatible with Polaris General (recent 1000/XP trims). Always verify by part number and fuse-box slot before purchase.Helpful Add-OnsCompatible with ISO 280 sealed relay sockets/harnesses for weather-tight serviceCompatible with micro-280 35 A SPST relay for higher-load circuits in the same footprint

• Specs & OE/series interchange — 12 VDC coil, SPST (1 Form A), 20 A NO contacts, ≈0.96 W coil power, ≈150 Ω coil resistance; sealed (washable) micro-280 footprint with built-in resistor. Replaces 4016819 and 4011283; Compatible with VH28 series, Compatible with G8VL series, Compatible with HFV11 series when coil voltage/contact form match; use 303-1AH-S-R1 as the technical reference number for cross-check
• Install & functions — Plug-in ISO 280 4-terminal micro relay for the fuse box / power distribution. Typical circuits (varies by vehicle): cooling fan, fuel pump, power steering, ECU main, lighting. If you’re replacing a failed unit, verify the printed part/slot and swap one-for-one in the fuse box; this relay is the same electrical style used across many Polaris off-road fuse panels
• Compatibility — Polaris RZR (Fuse Box) — Compatible with 2012 Polaris RZR 570 Fuse Box Relay, Compatible with 2013 Polaris RZR 570 Fuse Box Relay, Compatible with 2014 Polaris RZR 570 Fuse Box Relay, Compatible with 2015 Polaris RZR 570 Fuse Box Relay, Compatible with 2016 Polaris RZR 570 Fuse Box Relay, Compatible with 2017 Polaris RZR 570 Fuse Box Relay, Compatible with 2018 Polaris RZR 570 Fuse Box Relay, Compatible with 2019 Polaris RZR 570 Fuse Box Relay.
• Compatibility — Polaris RZR 800/900 (Fuse Box) — Compatible with 2010 Polaris RZR 800 Fuse Box Relay/2011 Polaris RZR 800 Fuse Box Relay/ 2012 Polaris RZR 800 Fuse Box Relay/ 2013 Polaris RZR 800 Fuse Box Relay/2014 Polaris RZR 800 Fuse Box Relay/ 2011 Polaris RZR 900 Fuse Box Relay/ 2012 Polaris RZR 900 Fuse Box Relay/2013 Polaris RZR 900 Fuse Box Relay/2014 Polaris RZR 900 Fuse Box Relay/2015 Polaris RZR 900 Fuse Box Relay/2016 Polaris RZR 900 Fuse Box Relay/2017 Polaris RZR 900 Fuse Box Relay/ 2018 Polaris RZR 900 Fuse Box Relay/ 2019 Polaris RZR 900 Fuse Box Relay.
• Compatibility — Polaris RZR 1000/XP (Fuse Box) — Compatible with 2014 Polaris RZR 1000 Fuse Box Relay/ 2015 Polaris RZR 1000 Fuse Box Relay/ 2016 Polaris RZR 1000 Fuse Box Relay/ 2017 Polaris RZR 1000 Fuse Box Relay/ 2018 Polaris RZR 1000 Fuse Box Relay/ 2019 Polaris RZR 1000 Fuse Box Relay/ 2015 Polaris RZR XP 1000 Fuse Box Relay/2016 Polaris RZR XP 1000 Fuse Box Relay/ 2017 Polaris RZR XP 1000 Fuse Box Relay/ 2018 Polaris RZR XP 1000 Fuse Box Relay/2019 Polaris RZR XP 1000 Fuse Box Relay/2020 Polaris RZR XP 1000 Fuse Box Relay/ 2021 Polaris RZR XP 1000 Fuse Box Relay
• Compatibility — Polaris Ranger (Fuse Box) — Compatible with 2012 Polaris Ranger XP 800 Fuse Box Relay, Compatible with 2013 Polaris Ranger XP 800 Fuse Box Relay, Compatible with 2014 Polaris Ranger XP 800 Fuse Box Relay, Compatible with 2012 Polaris Ranger XP 900 Fuse Box Relay, Compatible with 2013 Polaris Ranger XP 900 Fuse Box Relay, Compatible with 2014 Polaris Ranger XP 900 Fuse Box Relay, Compatible with 2015 Polaris Ranger XP 900 Fuse Box Relay, Compatible with 2016 Polaris Ranger XP 900 Fuse Box Relay, Compatible with 2017 Polaris Ranger XP 900 Fuse Box Relay, Compatible with 2018 Polaris Ranger XP 900 Fuse Box Relay, Compatible with 2019 Polaris Ranger XP 900 Fuse Box Relay.
• Compatibility — Polaris Sportsman & General (Fuse Box) — Compatible with 2014 Polaris Sportsman 570 Fuse Box Relay, Compatible with 2015 Polaris Sportsman 570 Fuse Box Relay, Compatible with 2016 Polaris Sportsman 570 Fuse Box Relay, Compatible with 2017 Polaris Sportsman 570 Fuse Box Relay, Compatible with 2018 Polaris Sportsman 570 Fuse Box Relay, Compatible with 2019 Polaris Sportsman 570 Fuse Box Relay; Compatible with 2022 Polaris General 1000 Fuse Box Relay, Compatible with 2023 Polaris General XP 1000 Fuse Box Relay, Compatible with 2024 Polaris General XP 1000 Fuse Box Relay, Compatible with 2025 Polaris General 4 1000 Fuse Box Relay
• Direct replacement pathway — If your machine calls for Polaris 4016819 (replaces 4011283) in the fuse box, this listing matches that style: SPST, 12 V, 20 A micro relay. Always compare the part number printed on your old relay or consult the Polaris parts catalog for your exact VIN/model.
• Complementary items for better installs — Compatible with ISO 280 relay connector kits (e.g., weather-sealed MP280S-ISO sockets) for secure harnessing; Compatible with Hella ISO-280 weatherproof relay connectors for plug-and-play service; Compatible with 301-1A micro 35 A relay (same footprint) when your circuit requires higher headroom. These pairings support clean replacement or capacity upgrades while retaining the same micro-280 interface