Factory build sheet

2021 Ford F-150 XL Supercab LB RWD

Build 1FTFX1C8-M · 3.5L 6cyl · Pickup

VIN positions 1 through 8 read 1FTFX1C8 and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.

Every F-150 whose VIN starts 1FTFX1C8 and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 59 of them.

  • Decoded Jul 7, 2026
  • 59 known VINs
  • 4 listed for sale now

Factory specification

As filed by Ford with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.

Engine

Displacement
3.5 L
Cylinders
6
Configuration
V-Shaped
Engine model
GTDI
Engine manufacturer
Ford
Turbocharged
Yes
Horsepower
375 hp
Fuel type
Gasoline

Drivetrain

Drive type
4x2
Brake system
Hydraulic

Body & chassis

Body class
Pickup
NHTSA body type
TRUCK
Cab type
Extra/Super/Quad/Double/King/Extended
Series
F-Series
Manufacturer
FORD MOTOR COMPANY

Weight rating

GVWR class
Class 2F
GVWR
7,001–8,000 lb

Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.

Driver assistance, as built

  • Forward collision warning Standard
  • Crash imminent braking Standard
  • Lane departure warning Standard

Systems the filing does not record are not listed above. Check the window sticker of the exact car before you rely on any single feature.

What this build asks today

Asking prices of live dealer listings decoded to this exact configuration — narrower than the trim-level figure, because every car counted here shares the same engine, transmission and drivetrain.

$29,489 median asking price · 7 listings · as of Aug 30, 2026

Too few listings to publish a price range — with 7 cars on the market, the cheapest and the dearest are single cars, not a spread. The median above is what they ask in the middle.

Compare every 2021 F-150 trim and its price →

The same build, other model years

Ford used the VIN pattern 1FTFX1C8 for 3 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.

How this VIN pattern is read

A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.

Positions Characters What they encode
1–3 1FT FORD MOTOR COMPANY · World manufacturer identifier
4–8 FX1C8 Model, body style, engine and restraint system
9 × Check digit — computed per vehicle, not part of the build
10 M Model year — 2021
11 × Assembly plant
12–17 ×××××× Production sequence number, unique to each vehicle

59 vehicles carry this build

Every VIN we have decoded to 1FTFX1C8-M shares the specification above.

  • 59 Known VINs
  • 4 Listed for sale now
  • 7 Priced listings
  • $29,489 Median asking

Neighboring configurations

Other factory configurations of the F-150, each with its own build sheet. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.

Keep going

Where this data comes from

Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.

Prices are asking prices from 7 live dealer listings decoded to this build , last updated August 30, 2026 . They are what sellers ask, not what buyers paid.

Vehicle counts come from the 59 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.