YF4 ✓ Factory-verified

Chevrolet · Regular Production Option

Vehicle engineering, hold order

Years 1971, 1975, 1998 Models 5 Factory citations 4

Query this via API →

Also described as Sales PromotionBumper guard & strip

Also documented for GMC

Documented applications

Chevelle / El Camino →

• 1971 ✓ Factory-verified

  footnote-flagged in source (Canada/export, build-sheet/tag-only, documentation-only, or package base engine not reported as an option — see chevellestuff legend)

  ⛭ GM Heritage factory kit — 1971 Chevrolet El Camino, p.85.

Nova / Chevy II →

• 1975 ● Confirmed

C/K pickup — GMT400 (1988–2000) →

• 1998 ✓ Factory-verified internal
  ⛭ GM factory document — 1998 chevrolet chevy c pickup 2wd rpo code list, p.1.

Suburban — GMT400 (1992–1999) →

• 1998 ✓ Factory-verified internal
  ⛭ GM factory document — 1998 chevrolet chevy suburban 2wd rpo code list, p.1.

Tahoe — GMT400 (1995–1999) →

• 1998 ✓ Factory-verified internal
  ⛭ GM factory document — 1998 chevrolet tahoe 2wd rpo code list, p.1.

This page aggregates every documented appearance of YF4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.