Keep a clean high-voltage path from the distributor to every spark plug with the Standard Ignition Spark Plug Wire Set 6657. This complete set of ignition wires drops in as a direct-fit replacement across a range of late-1980s and early-1990s GM cars, including the 1988-1990 Buick Electra, 1988-1992 Buick LeSabre, 1988-1991 Buick Reatta, 1988-1990 and 1992 Buick Riviera, 1991-1992 Buick Park Avenue, 1992 Buick Regal, 1988-1992 Oldsmobile 98, 1988-1991 Oldsmobile Delta 88, 1988-1992 Oldsmobile Toronado, 1992 Oldsmobile 88, 1992 Oldsmobile Silhouette, 1988-1992 Pontiac Bonneville, and 1992 Pontiac Trans Sport. See the "Vehicles it fits" section for the full application list.
- Carries the ignition spark: routes high-voltage current from the ignition source to each spark plug.
- Full set: supplies wires for the applications listed so you can service the ignition wiring together.
- Direct-fit replacement: installs on the listed vehicles.
Worn or cracked plug wires can cause misfires, rough idle, hesitation, and visible arcing; if failing wires are the cause, this set replaces them.
Interchange: 4045 · D801289 · 12036967 · 12073954 · 12073966 · 12074043 · 19154580 · 1991062400082 · 2922 · CN26657 · 9038 · 3086-03 · 308603
Manufacturer part number 6657
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
4045, D801289, 12036967, 12073954, 12073966, 12074043, 19154580, 1991062400082, 2922, CN26657, 9038, 3086-03
Frequently Asked Questions
What does this spark plug wire set do?
It carries high-voltage current from the ignition source to each spark plug, completing the path that fires the plugs. This set provides the ignition wires for the listed applications.
Which vehicles does the 6657 set fit?
It's a direct-fit replacement for various 1988-1992 Buick, Oldsmobile, and Pontiac models, including the LeSabre, 98, Toronado, and Bonneville. Check the "Vehicles it fits" section for the full list.
What are signs my plug wires may need replacing?
Common signs include engine misfires, rough idle, hesitation, and visible arcing from the wires. Diagnose the cause first, since these symptoms can have other sources.
Is this a complete set for the engine?
Yes, it is a spark plug wire set that supplies the ignition wires for the listed applications, so you can replace the plug wiring together.
What numbers does this set interchange with?
It cross-references 4045, D801289, 12036967, 12073954, 12073966, 12074043, 19154580, 1991062400082, 2922, CN26657, 9038, and 3086-03. The manufacturer part number is 6657.
