This 1991 Mercedes-Benz 420SEC features a 5.4L M113 V8 which was swapped into the car approximately three years ago along with a 722.6 5G-tronic automatic transmission from a W208 CLK55. Finished in Grey over Black Leather (231), a custom AMG-style body kit has been installed along with a full repaint in 2021. Additional equipment includes Borbet A wheels, Euro-spec lighting, ESP and climate control from a W208, a W210 AMG gauge cluster, upgraded sound system with OEM Mercedes-Benz head unit, and more. The most recent service consisted of a fresh fluids and filters. This M113-powered 420SEC shows 191k km (~118k miles) and is now offered for sale by the selling dealer in Latvia with two remote key FOBs, one additional service key, and a clean Latvian registration certificate.

The exterior underwent a full repaint in 2021 to Grey (RM paint code MA705.30) and features black painted trim. A custom AMG-style body kit features extended front and rear bumper skirts along with side skirts and a trunk mounted lip spoiler. Exterior features include a power sliding sunroof, a power adjustable passenger side mirror, dual chrome exhaust tips, and headlamp wiper delete. The car retains it's Euro-spec lighting and bumpers.

Staggered 17” Borbet A wheels feature paint-matched centers with a polished lip. The wheels are wrapped with Taurus UHP tires measuring 245/45 front and 275/40 rear with 2020 date codes. A full brake fluid flush was performed in May 2023. 

The cabin is trimmed in Black Leather (261) with Burl Walnut wood trim lining the center console, gearshift, dashboard and door panels. Interior features include an OEM+ Mercedes-Benz head unit with an upgraded sound system and trunk-mounted subwoofer, a fire extinguisher, functioning cruise control, full air conditioning with head unit from the W208 AMG donor car, and a Victor DB3 wood and leather steering wheel. 

The Victor DB3 steering wheel fronts W210 AMG gauges including a 260-kph speedometer and 7k-rpm tachometer, along with gauges for fuel level and coolant temperature. The odometer reads 191k km (~118k miles) with approximately 11k kilometers added since the engine swap in 2021.

This C126 is powered by a swapped 5.4-liter M113 V8 which is factory rated at 342 horsepower and 376 lb-ft of torque. Power is sent to the rear wheels through a 722.6 five-speed automatic transmission. Both the engine and transmission were swapped from a W208 CLK55 AMG with 180k kilometers. Recent maintenance includes an engine oil and oil filter change, transmission fluid flush with filter, differential fluid flush and power steering fluid flush with filter. The car has been set up to run on both LPG or petrol, and the seller states the LPG system can be deleted at any time. 

This final year model M113-swapped 420SEC is now offered in Latvia with two remote key FOBs, one additional service key, and a clean Latvian registration certificate.

Thorough videos have been provided by the seller showing a cold start, driving footage, all interior features, and the underbody of the car.