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Specs & OE interchange — 12V DC, ~20A, 5-pin Mini ISO automotive relay. Marking: 156700-1700. Interchange/OE refs: Compatible with Subaru 82501TC000 (supersedes 82501FE010); Compatible with Toyota 90987-04004 / 90084-98032; cross-refs: Compatible with Standard Motor Products RY-345; Compatible with Airtex 1R1467; Compatible with Wells 20129; Compatible with BWD R4751; Compatible with Echlin AR485; Compatible with Pontiac 94858551; Compatible with DENSO 567-0002.
Where it installs & what it does — Fits in the engine-bay or passenger-compartment fuse/relay box (location varies by vehicle). Restores proper switching for circuits this relay controls (e.g., DRL/accessory/engine-system loads per application). Subaru documentation notes passenger-compartment access behind the knee-bolster on some models.
Compatibility — Forester (per year list) — Compatible with Subaru Forester: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 (various trims/2.0/2.5/XT). Check fuse/relay box position by year/trim.
Compatibility — Impreza family (per year list) — Compatible with Subaru Impreza: 2002–2021 (list each year: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021); Compatible with Impreza WRX: 2002–2014 (2002…2014); Compatible with Impreza STI: 2004–2014 (2004…2014).
Compatibility — Legacy/Outback/Crosstrek/Ascent/BRZ/WRX (per year list) — Compatible with Subaru Legacy: 2013–2021 (2013…2021); Compatible with Subaru Outback: 2013–2021 (2013…2021); Compatible with Subaru Crosstrek: 2016–2021 (2016…2021); Compatible with Subaru Ascent: 2019–2021 (2019, 2020, 2021); Compatible with Subaru BRZ: 2013–2020 (2013…2020); Compatible with Subaru WRX (new-gen): 2015–2020 (2015…2020). (Fitment ranges from Subaru catalog entry for 82501TC000 with manufacturer note “DENSO 156700-1700”.)
Additional cross-brand compatibility (same relay family) — Compatible with Toyota systems calling for 90987-04004 / 90084-98032; Compatible with Scion FR-S model years using DENSO 156700-1700 (same relay body/marking); Compatible with Pontiac Vibe 2009 (cross-ref 94858551). Always match by OE number and cavity/pinout before ordering.
Common complementary items to pair in the same repair — Mini-ISO relay sockets/harness pigtails, blade fuses for the affected circuit, and (when applicable) the companion accessory/DRL relay from the same cavity group. Use OE numbers from your vehicle’s catalog to select complementary parts; example Subaru OE group shows this relay listed as “Daytime Running Light Relay”.

156700-1700 12V 20A 5-Pin Mini ISO Automotive Relay

Direct replacement by OE number: Compatible with Subaru 82501TC000 (supersedes 82501FE010) and Toyota 90987-04004 / 90084-98032. Crosses: Standard RY-345, Airtex 1R1467, Wells 20129, BWD R4751, Echlin AR485, Pontiac 94858551, DENSO 567-0002.

Key Features

12V DC, ~20A load rating; 5-pin Mini ISO footprint for common engine/accessory circuits.
Designed to meet OE switching performance for high-current loads with reliable coil actuation.
Housing and terminals sized for factory relay cavities; check cavity orientation/pin layout before install.

Typical Location & Function

Installs in the engine-compartment or passenger-compartment fuse/relay box (location varies by model/year).
Restores proper operation for the circuit assigned to this relay in your vehicle (e.g., daytime running light, accessory, or engine-system loads per application).

Compatibility Snapshot (match by OE#)

Compatible with Subaru: Forester (2003–2021), Impreza (2002–2021), Impreza WRX (2002–2014), Impreza STI (2004–2014), Legacy (2013–2021), Outback (2013–2021), Crosstrek (2016–2021), Ascent (2019–2021), BRZ (2013–2020), WRX (2015–2020).

Also compatible by OE#: Toyota applications calling for 90987-04004 / 90084-98032; Scion FR-S years using 156700-1700; Pontiac Vibe 2009 using 94858551.

What’s Included

1 × 156700-1700 5-Pin Mini ISO relay.

Install Tips

Disconnect the battery negative terminal.
Locate the fuse/relay box; pull the old relay straight up, align pins, and press the new relay fully seated.
Reconnect battery and verify circuit function.

Always confirm by OE number and relay cavity before purchase. Vehicle trims/options can change relay assignments.