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51905 ACDelco GM Original Equipment 21171151 Ignition Lock Cylinder – Saturn S-Series Square Head Key (1994–1998)

A genuine ACDelco GM Original Equipment ignition lock cylinder (OE part # 21171151) engineered as a direct-replacement for 1994–1998 Saturn S-Series coupes, sedans, and wagons equipped with the first-design square-head key. Features a six-tumbler sidebar design for precise key matching and reliable engine starting.
$21.01

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  • Description
  • Specifications
  • Vehicle Fitments

The ACDelco GM Original Equipment 21171151 is an OEM ignition lock cylinder — also cataloged as a Cylinder Kit, Ignition Switch — designed specifically for 1994–1998 Saturn S-Series vehicles that use the first-design square-head key. As a genuine GM part, it restores factory function to the ignition system, controlling the electric starter, ignition, and fuel injection circuits.

  • OEM Part Number: 21171151 (ACDelco GM Original Equipment)
  • Key Type: First-design square-head key; six-tumbler sidebar cylinder — matches only the correct OEM key for secure operation
  • Direct Replacement: Drop-in fitment requiring no modification; returns the ignition system to factory specification
  • Fitment: 1994–1998 Saturn SC1, SC2, SL, SL1, SL2, SW1, SW2 — all with 1.9L L4 engine
  • Condition: New OEM — same part made and installed by the factory
  • Warranty: Backed by GM's factory warranty
  • Weight / Dimensions: 0.60 lb; approximately 3.2 × 3.1 × 1.1 in
Condition New OEM
Manufacturer ACDelco
Oe part # 21171151
Product type Ignition Lock Cylinder
  • Saturn SC1 (1995)
  • Saturn SC1 (1996)
  • Saturn SC1 (1997)
  • Saturn SC1 (1998)
  • Saturn SC2 (1995)
  • Saturn SC2 (1996)
  • Saturn SC2 (1997)
  • Saturn SC2 (1998)
  • Saturn SL (1995)
  • Saturn SL (1996)
  • Saturn SL (1997)
  • Saturn SL1 (1995)
  • Saturn SL1 (1996)
  • Saturn SL1 (1997)
  • Saturn SL2 (1995)
  • Saturn SL2 (1996)
  • Saturn SL2 (1997)
  • Saturn SW1 (1995)
  • Saturn SW1 (1996)
  • Saturn SW1 (1997)
  • Saturn SW2 (1995)
  • Saturn SW2 (1996)
  • Saturn SW2 (1997)