Restore reliable start-up and accessory power with the Standard Ignition Ignition Switch / Ignition Starter Switch (US-270, also written US270). This direct-fit replacement installs on the 1995-1999 Oldsmobile 88, 1995-1996 Oldsmobile 98, 1996-1999 Oldsmobile LSS, 1997-1998 Oldsmobile Regency, and 1996-1999 Pontiac Bonneville — see the Buyer's Guide tab for full engine-level details. The ignition switch carries the electrical current that energizes the starter, ignition, and accessory circuits as you turn the key; if a failed switch is the cause of no-crank, intermittent power, or accessories that cut out, this replaces it.
- Copper alloy conductors: provide strong electrical conductivity with low resistive losses.
- Quality-controlled build: from a global manufacturer of original-equipment ignition products, with control maintained from componentry through to the finished part.
- 100% tested: each unit is checked to verify both mechanical and electrical switching performance.
- Robust materials: high-grade construction built to meet the demands of professional service.
Interchange: CS628 · LS690 · KS6243 · 1990182
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does this ignition switch fit?
It fits the 1995-1999 Oldsmobile 88, 1995-1996 Oldsmobile 98, 1996-1999 Oldsmobile LSS, 1997-1998 Oldsmobile Regency, and 1996-1999 Pontiac Bonneville. Check the Buyer's Guide tab to confirm your vehicle.
What does the ignition switch do?
It carries electrical current to energize the starter, ignition, and accessory circuits when you turn the key, directing power to the systems that let the engine crank and run.
What are signs this switch may need replacing?
Common signs include no-crank when turning the key, intermittent power, or accessories that cut in and out. Diagnose the cause first, since these symptoms can have other sources.
What part numbers does this switch cross-reference?
It interchanges with CS628, LS690, KS6243, and 1990182. Match the interchange number to what's on your vehicle to confirm.
How is this ignition switch tested?
Each unit is 100% tested to verify both mechanical and electrical switching performance, and it uses copper alloy conductors for strong conductivity with low resistive losses.
Write a Review