1991 Ford F-150 XL Regular Cab 4x4 8-foot Styleside box — 5.0-liter EFI V8

Service topics

4

Scheduled topics

3

Applicability stated

4

Exact references

1

Before ordering Identify your engine, options and build date. Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.

• Engine oil and filterView intervals, applicability and sources

  01

  Engine oil and filter

  Sourced interval available

  Applies to: 1991 · 5.0L (302 cu in) V8 · United States · This recovered schedule is scoped to the cited two-wheel-drive V8 record; other engines, four-wheel drive, GVWR packages, and configuration-specific duties are not claimed.

  Published interval: 7,500 mi · Normal service.

  Source: Ford — 1991 F 150 2WD Pickup V8-302 5.0L factory normal-service schedule (preserved service-manual database) · Normal Service — recurring 7,500-mile rows · checked 2026-08-05

• Spark plugsView intervals, applicability and sources

  02

  Spark plugs

  Sourced interval available

  Applies to: 1991 · 5.0L (302 cu in) V8 · United States · This recovered schedule is scoped to the cited two-wheel-drive V8 record; other engines, four-wheel drive, GVWR packages, and configuration-specific duties are not claimed.

  Published interval: 30,000 mi · Normal-service replacement interval for the cited engine.

  Source: Ford — 1991 F 150 2WD Pickup V8-302 5.0L factory normal-service schedule (preserved service-manual database) · Normal Service — 30,000-mile replacement row and repeating rows where published · checked 2026-08-05

• Engine coolantView intervals, applicability and sources

  03

  Engine coolant

  Sourced interval available

  Applies to: 1991 · 5.0L (302 cu in) V8 · United States · This recovered schedule is scoped to the cited two-wheel-drive V8 record; other engines, four-wheel drive, GVWR packages, and configuration-specific duties are not claimed.

  Published interval: 30,000 mi · Normal-service replacement interval.

  Source: Ford — 1991 F 150 2WD Pickup V8-302 5.0L factory normal-service schedule (preserved service-manual database) · Normal Service — recurring 30,000-mile coolant replacement rows · checked 2026-08-05

• Engine air filterView intervals, applicability and sources

  04

  Engine air filter

  Exact reference available

  Applies to: 1991 · 4.9-liter EFI inline-six, 5.0-liter EFI V8, 5.8-liter EFI V8 · United States

  Source: Walmart Business catalog — FA-1046 interchange and engine-specific F-150 fitment · Vehicle fitment — F-150 4.9L and 5.0L 1987–1996; 5.8L 1988–1996; OE interchange FA-1046 · checked 2026-08-27

  4.9L inline-six, 5.0L V8, and 5.8L V8

  Motorcraft FA-1046

  Applies to: 1991 · 4.9-liter EFI inline-six, 5.0-liter EFI V8, 5.8-liter EFI V8 · United States

  Source: Walmart Business catalog — FA-1046 interchange and engine-specific F-150 fitment · Vehicle fitment — F-150 4.9L and 5.0L 1987–1996; 5.8L 1988–1996; OE interchange FA-1046 · checked 2026-08-27

  Verified ordering references

  • Service replacementMotorcraft FA-1046

    Qty. 1 · Engine air-filter element · catalog-listed

    The catalog cross-references FA-1046 for these 1991 F-150 gasoline-engine applications; confirm the VIN and installed air-cleaner housing before ordering.

    Catalog: Walmart Business catalog — FA-1046 interchange and engine-specific F-150 fitment · Vehicle fitment — F-150 4.9L and 5.0L 1987–1996; 5.8L 1988–1996; OE interchange FA-1046 · checked 2026-08-27

    Search this part on Amazon