ZZ4 and I were discussing ZQ8 Sway Bars and the question came up whether they were different from stock on the Blazers. This doesn't seem like common knowledge so I went out and measured mine and did some research over lunch today:

All of the stabilizer bars are made from modified SAE 1090 Steel. All the model information per part is from gmpartsdirect.com. I would check there before making any decisions on what part to look for.

Front Sway Bar

15981886 (33mm)
  • 1995-2002 Jimmy & Envoy
  • 1995-2003 Blazer
  • 1996-2002 Bravada
  • 1997-2002 ZQ8 S10 & Sonoma


15708425 (33mm)
RPO: ZM6, ZW7, Z83, Z85
  • 1995-2002 Jimmy & Envoy
  • 1995-2003 Blazer
  • 1996-2002 Bravada


15993849 (33mm)
  • 1995-2002 ZR2 Jimmy & Envoy
  • 1995-2003 ZR2 Blazer
  • 1996-2002 ZR2 Bravada
  • 1994-2002 ZR2 S10 & Sonoma



15677613 (29mm)
  • 1983-1994 Blazer & Jimmy
  • 1994-2002 Z85 S10 & Sonoma
  • 1982-1996 ZQ8 S10, S15, & Sonoma
  • 1991-1994 Bravada


15993848 (28mm)
  • 1994 ZR2 S10 & Sonoma
  • 1995-2000 ZR2 S10 & Sonoma w/o Highrider Pkg


15677614 (25mm)
  • 1982-1993 S10, S15, & Sonoma w/o ZQ8
  • 1994-2002 Z83 S10 & Sonoma


Rear Sway Bar

15957477 (25mm)
  • 1995-2003 2 Door Blazer
  • 1995-2002 2 Door Jimmy


15714810 (23)
ZR2 and manual trans 4WD
  • 1995-2003 4 Door Blazer
  • 1995-2002 4 Door Jimmy & Envoy
  • 1996-2002 Bravada


15957475 (23mm)
  • 1995-2003 4 Door Blazer
  • 1995-2002 4 Door Jimmy & Envoy
  • 1994-2002 S10 & Sonoma
  • 1996-2002 Bravada


So the ZQ8's are the same size as your stock blazer front sway bar. And the rear sway isn't any different on any of the trucks, but if you are looking to get the ZQ8 sway on your 1st gen or dime you can get one cheap from a stock blazer.