Stabilus 4B-166623 Back Glass Lift Support

Brand Stabilus 4B-166623
Y
Y
Body 0.591
Compressed Length 13.484
Compressed Length 342.5
Extended Length 19.961
Extended Length 507
Force (N) 160
Force Lbs 36
Hardware Kit NO
Rod Connection PLASTIC SOCKET
Rod Dia (IN) 0.236
Rod Diameter 6
Rod End Attachment Dia (IN) 0.315
Rod End Attachment Dia (MM) 8
Shaft 0.236
Shaft Connection PLASTIC SOCKET
Tube Connection PLASTIC SOCKET
Tube Dia (IN) 0.591
Tube Diameter 15
Tube End Attach Dia (IN) 0.315
Tube End Attach Dia (mm) 8
Fits Isuzu, Saturn, Chevrolet, and GMC · 20 vehicles

Lift support. Helps hold glass open smoothly and securely.

Plastic socket ends. Simple attachment points for a clean, secure connection.

Stabilus engineering. Trusted gas spring design for consistent support.

Cross-references AMS Automotive 4575, Focus Auto Parts 84575 and Stabilus 4B-166623 for the same application. See all 24.

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Back Glass Lift Support for GM and Isuzu SUVs

This Stabilus back glass lift support is built for rear glass applications that need controlled opening and steady hold position. It is a direct-fit style replacement for select Chevrolet Trailblazer EXT, GMC Envoy XL, GMC Envoy XUV, Saturn Relay, and Isuzu Ascender models, including the extended-version Ascender application.

  • Brand: Stabilus
  • Part number: 4B-166623
  • Back glass lift support for rear glass liftgate operation
  • Compressed length: 13.484 in. / 342.5 mm
  • Extended length: 19.961 in. / 507 mm
  • Force rating: 160 N / 36 lb
  • Rod diameter: 0.236 in. / 6 mm
  • Tube diameter: 0.591 in. / 15 mm
  • Plastic socket rod, shaft, and tube connections

Fitment Details

Compatible with rear glass applications on these vehicles:

  • Fits 2004-2007 Isuzu Ascender, N/A, Extended Version
  • Fits 2005-2007 Saturn Relay, N/A
  • Fits 2002-2006 Chevrolet Trailblazer EXT, N/A
  • Fits 2002-2006 GMC Envoy XL, N/A
  • Fits 2004-2005 GMC Envoy XUV, N/A
  • Fits 2003 Isuzu Ascender, N/A

Product Details

The Stabilus 4B-166623 is a rear glass lift support engineered for controlled motion and consistent holding force on the back glass of select GM and Isuzu utility vehicles. With a 160 N force rating, 19.961-inch extended length, and plastic socket end connections, it matches the dimensions and attachment style used in the listed applications. This part cross-references Focus Auto Parts 84575 for the same application.

Common Problems This Part Can Address

  • Rear glass that will not stay open
  • Back glass that drops too quickly when lifted
  • Weak or worn lift support pressure
  • Uneven or inconsistent rear glass operation
  • Noisy or unstable rear glass movement

Installation Notes and Tips

Verify the compressed and extended lengths, rod diameter, tube diameter, and plastic socket attachment style before installation. Compare the existing support to part number 4B-166623 to confirm the correct rear glass application for your Chevrolet Trailblazer EXT, GMC Envoy XL, GMC Envoy XUV, Saturn Relay, or Isuzu Ascender. Always support the glass before removing the old support and check both sides of the lift mechanism for wear.

Quality Assurance

Stabilus is a recognized supplier of gas-charged support components used in automotive lift applications. Part number 4B-166623 is specified for the listed vehicle fitments and dimensional requirements.

This part fits 20 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2007IsuzuAscenderN/AExtended Version
2007SaturnRelayN/A
2006ChevroletTrailblazer EXTN/A
2006GMCEnvoy XLN/A
2006IsuzuAscenderN/AExtended Version
2006SaturnRelayN/A
2005ChevroletTrailblazer EXTN/A
2005GMCEnvoy XLN/A
2005GMCEnvoy XUVN/A
2005IsuzuAscenderN/AExtended Version
2005SaturnRelayN/A
2004ChevroletTrailblazer EXTN/A
2004GMCEnvoy XLN/A
2004GMCEnvoy XUVN/A
2004IsuzuAscenderN/AExtended Version
2003ChevroletTrailblazer EXTN/A
2003GMCEnvoy XLN/A
2003IsuzuAscenderN/A
2002ChevroletTrailblazer EXTN/A
2002GMCEnvoy XLN/A
Directly replaces or cross-references 24 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4575Focus Auto Parts — 84575Stabilus — 4B-166623Tuff Support — 6123438-15050-924-08-15050-925-0819-6188819-80962764VL7973XC8712SP8715SA16662381961888198096150509241505092581505092408150509250D4575D95156D95156DLSG330052TSG330052