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2021 Ford F-350 Super Duty

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 F-350 Super Duty.

The 2021 Ford F-350 Super Duty is a heavy-duty full-size pickup built on Ford's commercial-grade Super Duty platform, powered by a turbodiesel engine that requires 7.0 quarts of 5W-30 motor oil for service intervals. This model year enters the long-running Super Duty lineage with an impressive zero recall record through production, a testament to the platform's mature engineering and Ford's production quality control. With 88 total owner complaints filed, the 2021 model shows a relatively low complaint volume overall, though the Fuel System on diesel variants represents the most frequently cited concern among the ownership base. For researchers evaluating this generation, the absence of recalls combined with modest complaint numbers positions the 2021 F-350 Super Duty as a notably reliable iteration within the Super Duty family.

Model year20262025202420232021202020192018

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity7.0 qtOEM · verified
Engine oil type5W-30OEM · verified
Lug nut torque165 ft-lbsOEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 65 · 650 CCA battery. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 65 · 650 CCAOEM · verified
Tire sizeLT275/65R18/E 123/120SOEM · verified
Wheel / rim8, Optional: 8; DRW: 6.5 inOEM · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length263.8 in
Overall width79.9 in
Overall height78 in
Wheelbase176 in
Curb weight6517 lb
Track (front / rear)68.5 / 67.3 in

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the F-350 Super Duty of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

6.8–7.6 sec0–60 mph (tested)quickest 6.80 sec — 2020 Limited 6.7L Crew Cab DRW (8'2.1" Bed)
YearTrim / engine0–60¼ mileHPDrivetrain
2020Limited 6.7L Crew Cab DRW (8'2.1" Bed) 6.7L Turbo Diesel V86.80 sec15.20 sec475 hp4x4
2020King Ranch Tremor Crew Cab (6'9.9" Bed) 7.3L V87.30 sec15.60 sec430 hp4x4
2020Platinum Tremor Crew Cab (6'9.9" Bed) 7.3L V87.50 sec15.70 sec430 hp4x4
2017Platinum 6.7L Crew Cab (6.8 ft. Bed) 6.7L Turbo Diesel V87.20 sec15.60 sec440 hp4x4
2017Lariat 6.7L Crew Cab DRW (8.2 ft. Bed) 6.7L Turbo Diesel V87.60 sec15.80 sec440 hp4x4

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 7.0 qt of 5W-30 engine oil, 80W-90 · 75W-140 · Synthetic · 75W-85 in the differential, Dot 4 brake fluid. Torque lug nuts to 165 ft-lbs. The firing order is 1-3-7-2-6-5-4-8.

Lubricants & capacities

Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity10R140
Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity10R140
Brake FluidDot 4
Differential Gear Oil80W-90 · 75W-140 · Synthetic · 75W-85
Differential Gear Oil80W-90 · 75W-140 · Synthetic · 75W-85
Engine CoolantMotorcraft Yellow Concentrated

Engine torques

Crankshaft Position (CKP) Sensor Bolt(s)7.14 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)7.14 ft-lbs
Crankshaft Position (CKP) Sensor Bolt(s)8.08 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)7.14 ft-lbs
Oxygen (O2S) Sensor Bolt(s)35.0 ft-lbs
Knock Sense (KS) Bolt(s)14.75 ft-lbs
Engine Coolant Temperature (ECT) Sensor Bolt(s)20.0 ft-lbs
Oxygen (O2S) Sensor Bolt(s)35.0 ft-lbs

Chassis torques

Differential Fill PlugFront: 20.0 ft-lbs
Lug Nuts165 ft-lbs
Transfer Case Fill Plug20.0 ft-lbs
Transfer Case Drain Plug20.0 ft-lbs

Ignition

Cylinder Firing Order1-5-4-8-6-3-7-2
Cylinder Firing Order1-3-7-2-6-5-4-8
Spark Plug ManufacturerMotorcraft
Spark Plug Gap0.042-0.046 in
Spark Plug Torque18.0 ft-lbs
Spark Plug ManufacturerMotorcraft
Spark Plug Gap0.051 in
Spark Plug Torque11.08 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.68 lbs
Oil GroupPAG
Oil TypeYN-12-D
Oil Capacity4.10 oz
RefrigerantR134a
Refrigerant Capacity1.68 lbs
Oil GroupPAG

Service checks

Fuel Pump Pressure Minimum51.0 psi
Fuel Pump Pressure Maximum62.0 psi
Key ON Engine OFF (KOEO)51.0-62.0
Residual Pressure51.0-62.0 psi
Key ON Engine OFF (KOEO)53.0
Residual Pressure53.0-73.0 psi
Fuel Pump Pressure Minimum51.0 psi
Fuel Pump Pressure Maximum62.0 psi

Brakes

Brake Caliper Bolt to Carrier Torque55.0 ft-lbs
Brake Caliper Carrier to Hub Bolt TorqueUse new bolts. 203.0 ft-lbs
ABS Sensor Torque6.7
Minimum Pad Thickness0.118 in
Vented Rotor Minimum Thickness for Replacement1.433"
Maximum Rotor Runout.002"

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
114.75 ft. lbs., Step 2: 28.0 ft. lbs., Step 3: 105°14.75 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
114.75 ft. lbs., Step 2: 35.0 ft. lbs., Step 3: 105°14.75 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
114.75 ft. lbs., Step 2: 28.0 ft. lbs., Step 3: 105°14.75 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
1129.0 ft. lbs., Step 2: 90°129 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
166.0 ft. lbs., Step 2: Loosen 360°, Step 3: 129.0 ft. lbs., Step 4: 150°66 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
122.0 ft. lbs., Step 2: 90°22 ft. lbs
Cylinder Head — tightening sequence 1 stages
122.0 ft. lbs., Step 2: 44.0 ft. lbs., Step 3: 74.0 ft. lbs., Step 4: 90°, Step 5: 90°22 ft. lbs
Flex or Driveplate Bolts — tightening sequence 1 stages
13.66 ft. lbs., Step 2: 48.0 ft. lbs., Step 3: 90°3.66 ft. lbs
Intake Manifold to Engine Bolts — tightening sequence 1 stages
17.14 ft. lbs., Step 2: 45°7.14 ft. lbs
Intake Manifold to Engine Bolts — tightening sequence 1 stages
17.14 ft. lbs., Step 2: 45°7.14 ft. lbs
Main Bearings — tightening sequence 1 stages
1Bolts 1-2014.75 ft. lbs
Oil Pan to Block Bolts — tightening sequence 1 stages
18.83 ft. lbs., Step 2: 40°8.83 ft. lbs
Oil Pan to Block Bolts — tightening sequence 1 stages
114.75 ft. lbs., Step 2: 60°14.75 ft. lbs
Oil Pump to Cylinder BLock Bolts/Studs — tightening sequence 1 stages
1All Fasteners1.5 ft. lbs
Oil Pump to Cylinder BLock Bolts/Studs — tightening sequence 1 stages
1Bolts 1-47.14 ft. lbs
Oil Pump to Cylinder BLock Bolts/Studs — tightening sequence 1 stages
17.14 ft. lbs., Step 2: 45°7.14 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 100,000 mi.

Every 10,000 miAir Filter Restriction Gauge (inspect) · Brake Drum Assembly (inspect) · Brake Line (inspect) · Brake Linings (inspect) · Brake Rotor (inspect) · Diesel Emissions Fluid (fill)
Every 15,000 miAccessory Drive Belt (inspect)
Every 20,000 miCabin Air Filter (replace)
Every 30,000 miEngine Air Filter Element (replace) · Fuel Filter (replace)
Every 50,000 miEngine Breather Filter (replace)
Every 60,000 miWheel Bearing (repack)
At 90,000 miAccessory Drive Belt (inspect)
Every 100,000 miSpark Plugs (replace)
At 150,000 miDrive Axle Assembly (drain & refill) · Drive Belt (replace) · Transfer Case Assembly (drain & refill) · Transmission Fluid & Filter (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Owner complaints about the 2021 Ford F-350 Super Duty lead in one area — the fuel system, diesel, 21 of 88 reports (24%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 1 of the reports describe a crash and 3 a fire — a small share of the total, but worth weighing against the fuel system, diesel pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

0
Open recalls
NHTSA campaigns
5
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
88
Owner complaints
1 involved a crash · 3 a fire

Owner complaints filed with NHTSA, by component

All 88 complaints on record, top 8 components.

Fuel System, Diesel21
Electrical System7
Fuel/Propulsion System6
Unknown Or Other5
Engine4
Back Over Prevention3
Engine,Fuel/Propulsion System3
Visibility/Wiper3

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 5 bulletins on record with NHTSA.

BulletinDateComponentSummary
24L052025-09-24Unknown Or OtherCertain 2011-2022 Model Year Super Duty Vehicles Equipped with 6.7L Engine - Emission…
SSM 539732025-06-24Power TrainSome 2021-2024 Edge/Nautilus, 2021-2025 Bronco/Bronco Sport/E-Series/Escape/Corsair/Expedi…
SAN-Vol1 I12023-06-08EquipmentThe Service Awareness Newsletter is an informal communication that contains information…
SSM 497852021-05-07Fuel System, DieselSome 2021 F-Super Duty and 2021-2022 E-Series vehicles equipped with a 6.2L or 7.3L…
HSB2020-09.022020-09-02EquipmentSales Bulletin - 2021 F-Series order guide released, Grove City Hotel break in notice…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific F-350 Super Duty. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Group 65 batteryVehicles taking 7.0 qt

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBsOBD-II trouble codesTorque specificationsMaintenance schedulesFluid capacities & specs

Frequently asked

How much oil does the 2021 F-350 Super Duty take?

7.0 qt of Motorcraft 5W-30 Synthetic, per the factory manual.

Does the 2021 F-350 Super Duty have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.