Steering Boxes

Most E28s came with a 3.5 turn-to-turn ratio steering box. These can be identified with a silverish tag with red-ish writing. https://www.realoem.com./bmw/enUS/showparts?id=DC74-USA---E28-BMW-535i&diagId=32_0137.

The tag on the box will have 1 124 700.0 on it like these

• 
  Standard E28 Steering Box
• 
  Standard E28 Steering Box Tag

Part 32131126621 (RMFD HYDRO STEERING GEAR) was found on the following vehicles:

• E24 633CSi COUPE, U.S.
• E24 635CSi COUPE, U.S.
• E24 628CSi COUPE, Euro
• E24 635CSi COUPE, Euro
• E28: Details on E28
• E28 528i SEDAN, Euro
• E28 535i SEDAN, Euro
• E28 M535i SEDAN, Euro

Other part numbers for this same 3.5 turn box:

• 32131125855 - standard E28 - NLA
• 32131126318 - handicapped version - NLA
• 32131466155 - reman - NLA

The E28 M5, and E24 M635csi came with 3.0 turn-to-turn ("close ratio") steering boxes. These will have a red (M5) or blue (635csi) tag like these:

• M5 Steering Box Tag
  M5 Steering Box Tag
• 
  635csi Steering Box Tag

Part 32132225121 (RMFD HYDRO STEERING GEAR) was found on the following vehicles:

• E24 M635CSi COUPE, S38, Euro, MANUAL (5511) : POWER STEERING
• E24 M635CSi COUPE, S38, Euro, MANUAL (5531) : POWER STEERING
• E24 M635CSi COUPE, S38, Euro, MANUAL (5531) : POWER STEERING
• E24 M635CSi COUPE, S38, Euro, MANUAL (5511) : POWER STEERING
• E24 M635CSi COUPE, S38, Euro, RHD , MANUAL (5532) : POWER STEERING
• E24 M635CSi COUPE, S38, Euro, RHD , MANUAL (5532) : POWER STEERING
• E24 635CSi COUPE, M30, U.S., AUTO (5384) : POWER STEERING
• E24 635CSi COUPE, M30, U.S., MANUAL (5374) : POWER STEERING
• E24 M6 COUPE, S38, U.S., MANUAL (5514) : POWER STEERING
• E28 M5 SEDAN, S38, Euro, MANUAL (DC91) : POWER STEERING
• E28 M5 SEDAN, S38, Euro, RHD , MANUAL (DC92) : POWER STEERING
• E28 M5 SEDAN, S38, U.S., MANUAL (DC93) : POWER STEERING

Other matchin part numbers:

• 32 13 2 225 120

Subframe Reenforcement

• Subframe and Steering Reinforcement