GM Genuine Parts®Verified to fit 25 vehicles
| Vehicle | Trim | Engine |
|---|---|---|
| 2003 Cadillac DeVille | — | V8 4.6L |
| 2003 Cadillac DeVille | — | V8 4.6L |
| 2003 Cadillac Seville | — | V8 4.6L |
| 2003 Cadillac Seville | — | V8 4.6L |
| 2002 Cadillac DeVille | — | V8 4.6L |
| 2002 Cadillac DeVille | — | V8 4.6L |
| 2002 Cadillac Eldorado | — | V8 4.6L |
| 2002 Cadillac Eldorado | — | V8 4.6L |
| 2002 Cadillac Seville | — | V8 4.6L |
| 2002 Cadillac Seville | — | V8 4.6L |
| 2002 Oldsmobile Aurora | — | V8 4.0L |
| 2001 Cadillac DeVille | — | V8 4.6L |
| 2001 Cadillac DeVille | — | V8 4.6L |
| 2001 Cadillac Eldorado | — | V8 4.6L |
| 2001 Cadillac Eldorado | — | V8 4.6L |

WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, known to the State of California to cause cancer and reproductive harm. Service the vehicle in a well-ventilated area, wear gloves, and wash your hands. See www.P65Warnings.ca.gov/motor-vehicle-parts

Guaranteed fit — or free return
If a part we confirmed for your vehicle does not fit, we cover the return shipping and refund you in full. That is the fitment guarantee.
Nobody likes buying a part that turns out to be wrong. So if it doesn't fit, send it back for a full refund at no cost to you — return shipping is on us — and we'll help you get the right one.
Every part is covered for 24 months. Many brands add their own manufacturer warranty on top.
Ratings come from verified AutoBuffy buyers after delivery — no imported or paid reviews.

We do not list every part on earth — just the brands automakers actually trust. And we use AI to double-check not just the fitment but the product details on every listing, because we hate buying the wrong part as much as you do.



Top curated brands only
The brands automakers actually put on the car. No white-label mystery boxes.
We're obsessed with fitment
Year, make, model, trim, engine — plus the fine print most sites skip — so it fits the first time.
Search any part number
The number off your old part, a competitor listing, or the dealer part — we cross it and confirm the match.

GM Genuine Parts Spark Plug Boot 12163650
Guaranteed fit or free return
Part # 12163650Dealer charges $115.42SAVE 45%— You save $51.82

The GM Genuine Parts Spark Plug Boot (12163650) is a direct-fit replacement for 1998-2003 Cadillac and Oldsmobile vehicles. UPC 707773387474. In stock.

Fitment Obsessed
Every part checked against your exact year, make, model, trim, and engine.
Wrong Fit? On Us.
Free return shipping, no restocking fee — the fitment guarantee.
Brands OEMs Trust
The names automakers actually put on the car.
Millions of Parts, One Promise
If we say it fits, it fits.

Dealer charges $115.42SAVE 45%— You save $51.82
