Independent · Source-led · American performance history Issue 01 · 1951–2023
American Muscle Car Facts

Showroom arguments.
Race-bred answers.

General Motors option code

NK1  — Steering Wheel - Cushioned rim (13680 - 1069)

NK1 (Steering Wheel): a General Motors factory option code recorded on 1 model across 1970, with installs and price where a source states them.

1 model · 1 model year · 1 source

Red 1970 Chevrolet Chevelle SS two-door hardtop with a black vinyl roof, black hood stripes, SS fender badge and Magnum 500-style wheels, displayed in the GM Heritage Center hall
1970 Chevrolet Chevelle SS hardtop in red with black vinyl top, GM Heritage Collection (catalogued as an SS LS7) General Motors

Every sourced appearance

Year Model As named that year Price Installs
1970 Chevrolet Chevelle and Malibu SS Steering Wheel - Cushioned rim (13680 - 1069) RPO $34.80 3,078 Reported

Every row traces to the source it links from on that model's own year page; this table only collects them in one place.