Genuine OEM 4RA 007 793-04 12V 4-Pin NO Relay, IP54 50A, Plug B3 Compatible with Mercedes-Benz OE A0025428719/A0025428819 - Cross-Ref 0332019110, AL208595, 87522476

4RA 007 793-04 — 12V 4-Pin Normally Open Power RelayHigh-reliability, sealed (IP54) relay from the HELLA 4RA 007 793 family. Suitable for multi-purpose circuits in front/rear fuse & relay modules. Please match the OE number on your original part.Key SpecificationsElectrical: 12V DC, 4-pin, Normally Open (S2), High Performance ContactLoad ratings (typical family spec): 50A ohmic @12V, 46A inductive, 44A capacitiveSuppression: parallel resistor across coil (variant dependent)Ingress Protection: IP54; Plug Type ID: B3Compatible OE / Cross ReferencesCompatible with A0025428719, A0025428819; cross references include 0332019110, AL208595/AL81719, 87522476, WR41718, X08424, 57410-FP270-71.Typical Install LocationsEngine-compartment fuse/relay box (front SAM) on many modelsRear/luggage-compartment main fuse/relay box on select SUVs (e.g., GLK)Fitment Highlights (North America)Compatible with Mercedes-Benz C-Class (W204) 2008–2015; GLK (X204) 2010–2015; CLA 2014–2019; GLA 2015–2020; E400 2013–2015; CLS550 2012–2018; ML 2012–2015; GL 2013–2016; GLE 2016–2019; GLS 2017–2019; G550 4×4 2017–2018. Always confirm by OE number and your fuse-box legend.NotesThis listing is for a compatible replacement relay. Confirm the part number stamped on your original relay and the exact slot position before installation.

• Specs + OE/Cross-ref — 12V normally-open 4-pin “High Performance Contact” relay (wiring S2), IP54; ohmic 50A @12V (inductive 46A / capacitive 44A); Plug Type ID B3; with resistor across coil. Replaces/compatible OE numbers used by vehicle/equipment makers: Compatible with A0025428719, A0025428819; cross references include 0332019110, AL208595/AL81719, 87522476, WR41718, X08424, 57410-FP270-71. Verify the number stamped on your old relay before ordering.
• Operation & install location — Multi-purpose (body/engine systems) relay used in fuse/relay boxes for circuits such as fans, HVAC, fuel/aux loads depending on vehicle configuration. Typical install: Compatible with Mercedes-Benz W204 engine-compartment fuse/relay box (left side under hood); Compatible with GLK X204 main fuse/relay box under cargo floor. Always match slot/legend on the vehicle’s fuse cover and OE part number before installation.
• Fitment — C-Class (W204) engine-compartment fuse box multi-purpose relay: Compatible with 2012, 2013, 2014, 2015 Mercedes-Benz C250; Compatible with 2008, 2009, 2010, 2011, 2012, 2013, 2014 Mercedes-Benz C300; Compatible with 2008–2015 Mercedes-Benz C350; Compatible with 2008–2015 Mercedes-Benz C63 AMG. Use positions indicated on the cover diagram of the front SAM (fuse/relay module) for your specific sub-model/year.
• Fitment — GLK (X204) luggage-compartment fuse/relay box: Compatible with 2010, 2011, 2012, 2013, 2014, 2015 Mercedes-Benz GLK350; Compatible with 2013, 2014, 2015 Mercedes-Benz GLK250. Location: under cargo floor (main rear fuse/relay box). Confirm slot callouts on the vehicle diagram.
• Fitment — Compact models front SAM: Compatible with 2014, 2015, 2016, 2017, 2018, 2019 Mercedes-Benz CLA250; Compatible with 2014–2019 CLA45 AMG; Compatible with 2015, 2016, 2017, 2018, 2019, 2020 Mercedes-Benz GLA250; Compatible with 2015–2019 GLA45 AMG. Used as a multi-purpose fuse-box relay; check your OE number and slot index.
• Fitment — E/CLS front SAM: Compatible with 2013, 2014, 2015 Mercedes-Benz E400; Compatible with 2012, 2013, 2014, 2015, 2016, 2017, 2018 Mercedes-Benz CLS550. Installed in engine-bay fuse/relay module; confirm slot per cover diagram and OE.
• Fitment — M/GL/GLE/GLS SUVs (front SAM unless noted): Compatible with 2012–2015 ML350, 2012–2014 ML550, 2012–2015 ML63 AMG, 2015 ML400; Compatible with 2013–2016 GL350/GL450/GL550/GL63 AMG; Compatible with 2016–2018 GLE350, 2016–2017 GLE400, 2016–2019 GLE63/GLE63 S; Compatible with 2017–2019 GLS450/GLS550. Also Compatible with 2017–2018 G550 4×4 (front fuse/relay module). Verify OE A0025428719/8819.
• Complementary items for the same fuse boxes (upsell guidance) — For circuits that require a 5-pin change-over (SPDT) instead of this 4-pin NO relay, pair with a Compatible with Hella 4RD 007 794-031 (12V 20/40A SPDT, IP54, with bracket/resistor). This complementary SPDT relay often shares the same panels and lets you service circuits that need a “87/87a” change-over function alongside this 4RA NO relay.