Part number 31331134314 is a Genuine BMW Front Axle Protection Tube (commonly referred to as a front strut dust sleeve, dust boot, or protection bellow). Positioned on the left or right side of the front suspension, this protective sleeve shields the front strut's polished piston shaft from harmful road grit, dirt, and moisture, preventing premature seal failure. It supersedes the older BMW part number 31331124519.
- BMW 3-Series (E30 generation, 1984–1992): Fits standard RWD models like the 318i, 325i, 325is, 325e, and the iconic E30 M3 (Note: Typically excludes AWD 325ix models).
- BMW 5-Series (E28 & E34 generations, 1982–1996): Fits a wide array of trims including the 528e, 535i, 525i, 530i, 540i, and early generation M5s.
- BMW 6-Series (E24 generation, 1978–1989): Fits 633CSi, 635CSi, and M6 models.
- BMW 7-Series (E32 generation, 1988–1994): Fits 735i, 740iL, and 750iL.
BMW 3-Series (E30)
- Years: 1984–1991 (and up to 1993 for convertibles/Touring body styles).
- Cutoff Conditions: It applies universally across standard E30 models (318i, 325i, 325e, and M3). However, on the 325ix (AWD) platform, it is strictly noted as fitting only models built through August 1990 (08/1990).
BMW 5-Series (E34)
- Years: 1989–1995.
- Production Cutoff Date: For the 530i, 535i, and 540i equipped with the Factory M-Sport Suspension, this part has a strict production cutoff date up to September 1992 (09/1992). Models built after October 1992 with sport packages transitioned to a redesigned front strut assembly. Standard baseline suspension configurations (like the 525i) use it through the end of the E34 lifecycle.
BMW 5-Series (E28) & 6-Series (E24)
- E28 Years: 1982–1988 (Includes 528e, 535i, 524td, and M5).
- E24 Years: 1977–1989 (Includes 633CSi, 635CSi, and M6).
- Cutoff Conditions: For rare variants fitted with specific electronic damper setups or regional M-Tech equipment, parts catalogs apply a hard cutoff up to 09/1992 if retrofitted or cross-referenced with later E34 lines.
BMW 7-Series (E32)
- Years: 1988–1994 (Includes 735i/iL, 740i/iL, and 750iL).
- Production Cutoff Date: Standard assemblies use it throughout the entire generation. If your vehicle features the rare factory Electronic Damper Control (EDC), parts systems flag a production start date from May 1990 (05/1990) onward for rear sensor/strut pairings that share cross-referenced boots
|
