Fitment — Cars & crossovers — Compatible with 2009–2017 Chevrolet Traverse; 2010–2017 Chevrolet Equinox and 2010–2017 GMC Terrain; 2013, 2014, 2015, 2016, 2017, 2018, 2020 Chevrolet Malibu; 2011–2015 Chevrolet Cruze; 2014–2015 Chevrolet Corvette/SS; 2014–2016 Chevrolet Impala and 2014–2016 Chevrolet Impala Limited; 2008–2009 Pontiac G8; 2012–2016 Chevrolet Caprice; 2007–2014 Cadillac SRX (Underhood Fuse/Relay Box Relay).
Fitment — Additional passenger cars & SUVs — Compatible with 2005–2008, 2010–2015 Ford Taurus; 2006–2020 Ford Fusion; 1999–2008, 2011–2015 Ford F-150/F-250/F-350 Super Duty; 2007–2014 Lincoln MKZ/MKS/MKT/MKX and 2006 Lincoln Zephyr; 2006–2009 Mercury Milan and 2005–2008 Mercury Montego/Sable; 2006–2008 Ford Escape; 2007–2014 Ford Edge; 2011–2015 Ford Explorer (Underhood Fuse/Relay Box Relay).
Description
MR538851 12V 4-Pin Relay (Replaces 8627A008)Function: Controls high-current loads such as the A/C compressor clutch, horn, and fuel pump when specified by the vehicle manufacturer.
Electrical Specs: 12V DC; 4-blade SPST (Normally Open); 20A rating.
OE & Supersession: Direct replacement for MR538851; superseded by 8627A008.
Interchange Numbers: RY-862, 1R1643, 36135, D1773C, D1777C, 13500113, 19116962, 88988889, 93746301.
Typical Location: Engine-compartment fuse/relay box; match the cavity per the lid diagram before installation.
Common Symptoms Resolved: A/C clutch not engaging, horn inoperative, intermittent no-start/no-fuel-pump prime where this relay is used.
Installation Tips: Disconnect the battery; pull the old relay straight up; seat the new relay fully; verify fuses and related circuits are healthy.
Compatibility Note: See the listing bullet points for detailed year/make/model coverage, presented exclusively in the “Compatible with …” format.
Maintenance Advice: When replacing a control relay, inspect the socket for heat damage and ensure good terminal tension to prevent intermittent faults.
Verification: Always confirm by part number and vehicle trim/VIN prior to purchase.
This replacement part is not affiliated with any vehicle manufacturer. All references are for identification and application guidance only.