Modifications to the U.S. Mercedes R107 Series from 1972-1989

R107 Production Enhancements

• The springs have a different spring rate, front and rear.
• The front stabilizer bar has a 26mm diameter instead of 25mm diameter.
• The shock absorbers are shorter and have a harder rate.
• An additional polyurethane bottoming spring has been added.
• Some model 124 front end parts are used on the front end - the following parts are redesigned
• Front axle carrier, lower and upper control arms, Steering knuckle,
• Steering knuckle arm, front wheel hub with bearing.
• The front axle carrier has a newly modified contour, can be used on older model 107s.
• Limited slip differential
• The rear axle carrier mount has been offset by 124mm to the left.
• The rear carrier front rubber mounts are not interchangeable, marked with L and R, have different stiffness's.
• The rear axle center is now elastically mounted to the rear carrier both at the front and rear mounts.
• The rear axle shafts are provided with CV joints similar to model 126 coupe.
• New light alloy wheels similar to model 201, new mounting screws.
• New propeller shaft center mount, similar to model 124, not interchangeable with older 107s.
• Four piston brake calipers on front.
• Light alloy Master cylinder.
• Double diaphragm brake booster.
• Redesigned steering gear, designation 765.707 (LS80), NOT interchangeable with old unit, reduced travel for redesigned front end. Code letter R stamped into the housing. (The 560's turning circle is not as short as previous cars, less "sensitive" steering.
• Power steering pump relief pressure changed to 82 +-5 bar.
• Sheet metal floor under fuel tank changed, mounting positions of tank and filler neck changed.
• Outside Temperature indicator changed from Celsius to Fahrenheit.
• Exterior lamp failure indicator added.
• Fuses and electrical feeds changed.
• BODY SHEET METAL CHANGES: Radiator mount changed, hood changed, firewall changed, side-member connecting point front right changed, A-pillars changed, doors changed, B-pillars changed, main floor changed, rear floor changed, cross-member under the driver seat changed, sheet metal shrouds changed, various stiffeners and small parts changed.
• Door handles changed, similar to model 126.
• Door lock and striker changed.
• Central locking system changed, electric vacuum pump similar to models 126 and 201.
• Fuel tank flap actuating element and guide bushing changed.
• Outside heated rear view mirrors.
• Rear high mounted stop lamp added.
• New Grand Prix radio - larger display indicator with tone setting and more sensitivity - three levels, but returns to least sensitive when turned off.
• Front bumper and spoiler.
• Front bumper inner fender liners added.
• Front seats changed to include lateral
• Hood- a depression was added to the hood reinforcement to clear new brake booster, previous hood will not fit on car.