2023 Ford F-350 Super Duty — Torque Specifications
Quick-reference torques for lug nuts, oil and transmission drain plugs, brakes, axle nut, spark/glow plugs, valve cover, and intake manifold
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Quick reference
| Fastener | Torque (ft-lb / Nm) | Notes |
|---|---|---|
| Wheel lug nuts (SRW/DRW) | 150–170 ft-lb / 203–230 Nm | Typical for Super Duty 8-lug; re-torque after 50–100 miles. Verify by wheel/axle package. |
| Engine oil drain plug — 7.3L gas V8 | 18–22 ft-lb / 24–30 Nm | Replace crush washer if equipped; torque on a warm (not hot) engine. |
| Engine oil drain plug — 6.7L Power Stroke diesel | 21–30 ft-lb / 28–41 Nm | Large sump; confirm pan/plug style. |
| Transmission pan drain plug (10R140 TorqShift) | 18–25 ft-lb / 24–34 Nm | If equipped with pan drain; use new sealing washer. |
| Brake caliper bracket bolts — Front | 150–225 ft-lb / 203–305 Nm | Heavy-duty front brakes; use threadlocker only if OEM specifies. |
| Brake caliper bracket bolts — Rear | 95–130 ft-lb / 129–176 Nm | Verify by rear axle/brake package. |
| Brake caliper slide pins — Front | 24–35 ft-lb / 32–47 Nm | Clean and lube pins with high-temp silicone/PTFE brake grease. |
| Brake caliper slide pins — Rear | 20–30 ft-lb / 27–41 Nm | Do not over-grease boots; keep threads clean unless OEM says otherwise. |
| Front axle nut (4x4 unit hub) | 300–350 ft-lb / 407–475 Nm | Follow OEM procedure; some applications require a stake or new nut. |
| Rear axle shaft flange bolts (full-float) | 65–85 ft-lb / 88–115 Nm | For hub locknuts/preload, follow OEM multi-step procedure (not a single torque). |
| Spark plugs — 7.3L gas V8 | 13–18 ft-lb / 18–24 Nm | Torque on a cold engine; Ford typically advises no anti-seize. |
| Glow plugs — 6.7L diesel | 8–11 ft-lb / 11–15 Nm | Very low torque; use inch-pound wrench when possible. |
| Valve cover bolts — 7.3L gas | 7–9 ft-lb / 10–12 Nm | Snug in sequence, center-out, in stages. |
| Valve cover bolts — 6.7L diesel | 9–12 ft-lb / 12–16 Nm | Do not crush gasket; follow sequence. |
| Intake manifold bolts — 7.3L gas | 15–22 ft-lb / 20–30 Nm | Torque in crisscross pattern, center-out, in 2–3 stages. |
| Intake manifold bolts — 6.7L diesel | 7–10 ft-lb / 9–14 Nm | Often specified in in-lb; convert carefully and follow sequence. |
Wheel lug torque pattern
Use a star/cross pattern for all 8-lug wheels (SRW and DRW). Bring the wheel fully seated by hand, then:
- First pass: 50% of final torque in a star pattern.
- Second pass: 100% of final torque in the same star pattern.
- Final verification: Recheck each lug after a short drive, and re-torque after 50–100 miles or anytime a wheel is removed.
Clean the hub face and wheel mating surfaces to prevent false torque readings and rotor/wheel runout. Never lubricate lug nut seats; lightly oiling the stud threads is only acceptable if explicitly stated by Ford (most applications are torqued dry).
Brake torque notes
- Caliper bracket bolts: These provide the clamp that keeps the caliper square to the rotor. Heavily built Super Duty hardware often runs triple-digit torque. Use new bolts when Ford specifies one-time use. If threadlocker is called for, apply the OEM type and amount only.
- Caliper slide pins: Remove rust and old grease. Use a high-temperature silicone or PTFE brake lubricant on the smooth pin surfaces. Keep threads and bolt shoulders free of grease unless Ford specifies otherwise. Torque with the pins fully seated to avoid boot damage.
- Rotor and hub mating: Clean and de-scale the hub face and rotor hat. A light film of anti-seize on the hub pilot can help future service, but keep it off friction surfaces and lug seats.
Why torque matters
Correct torque is about clamp load, not just tightness. On a 2023 F-350 Super Duty, getting these values right prevents:
- Warped rotors and wheel vibration from uneven lug nut clamp.
- Leaks and stripped pans from over-tightened oil/transmission drain plugs.
- Pad taper, caliper rattle, and uneven braking from loose bracket or slide fasteners.
- Bearing and hub damage from incorrect axle nut preload.
- Misfires, blown-out plugs, or seized threads from improper spark/glow plug torque.
- Gasket creep and vacuum/boost leaks from under- or over-torqued valve cover and intake bolts.
Always torque fasteners in stages and in the sequence Ford specifies for multi-bolt patterns (intake, valve covers). Work on a cool engine for plugs and composite gaskets, and use a quality, calibrated torque wrench in the appropriate range (inch-pound for smaller fasteners).
Disclaimer: These values are typical ranges for the 2023 Ford F-350 Super Duty across common engine/axle/brake packages (7.3L gas and 6.7L diesel; SRW/DRW) and may vary by VIN, axle code, brake option, and hardware revision. Critical fasteners—especially axle/hub, steering, and brake components—should always be verified against the OEM Ford service manual for your exact vehicle.
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More specs for the 2023 Ford F-350 Super Duty
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
2000 F-350 Super Duty
2001 F-350 Super Duty
2002 F-350 Super Duty
2003 F-350 Super Duty
2004 F-350 Super Duty
2005 F-350 Super Duty
Maintenance & repair guides
2023 Ford F-350 Super Duty Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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Values can vary by engine, trim and build date; check your VIN-specific service information. Updated 2026-10-12.