1998 Ford F-250 Lug Nut Torque & Bolt Specs

The 1998 Ford F-250 lug nut torque is 140 ft-lbs (190 Nm), tightened with a 15/16" socket on 9/16"-18 studs. Torque in a star pattern in two passes (snug, then final), and re-check after the first 50–100 miles of driving. Use a calibrated torque wrench — not an impact gun — for the final pass.

Lug nut torque: 140 ft-lbs (190 Nm) · Socket size: 15/16" · Thread: 9/16"-18.

This page is the OEM-referenced fastener summary for the 1998 Ford F-250. Use it before any maintenance or repair job where torque values matter — brake work, wheel changes, suspension service, engine teardowns, or oil changes. Specs are pulled from manufacturer service literature, cross-checked against community data, and updated as new chassis variants become available.

Ford lug-nut torque varies more by chassis than most makes — 100 ft-lbs for Focus/Fusion/Fiesta, 150 ft-lbs for half-ton F-150, and 165 ft-lbs for Super Duty F-250/F-350. F-150s from 2004-2014 use a 21mm OEM socket, while 2015+ aluminum-body trucks moved to the larger 22mm. Ford torque-to-yield (TTY) head bolts are standard from the early 2000s — do not reuse them, ever.

Common fastener categories on the 1998 Ford F-250

Repair guidance for this model year

Heads up for 1998 Ford F-250 owners: Vehicles this age frequently have seized fasteners due to thread corrosion. Apply penetrating oil (PB Blaster, Kroil) 24 hours before any wrenching, and have a thread chaser on hand. Lug studs are particularly prone to thread damage at this age; if a nut spins on without engaging, the stud is stretched and must be replaced before the wheel goes back on.

Tools you will need

Frequently asked questions

What is the lug nut torque on a 1998 Ford F-250?

The OEM-specified lug-nut torque for the 1998 Ford F-250 is 140 ft-lbs (190 Nm), using a 15/16" socket on 9/16"-18 thread studs. Use a calibrated torque wrench in a star pattern, in two passes (50% and 100%), and re-check after 50-100 miles of driving.

What socket size do I need for the 1998 Ford F-250 lug nuts?

The 1998 Ford F-250 uses a 15/16" socket. A 6-point impact-rated socket is recommended over a 12-point chrome socket — 12-points round off lug nuts under impact-driver use.

Are the 1998 Ford F-250 fasteners metric or SAE?

Metric is the standard for this vehicle. Most fasteners on this vehicle are metric (M6, M8, M10, M12, M14). Bring a full metric set; SAE substitutes can round the head. Bolt-head markings are the fastest way to confirm grade and material at the bench.

Other Ford F-250 years

Same model, different model year — fastener spec may change. Always confirm against the year for your VIN.

→ 1998 Ford F-250 oil drain plug torque & size

→ 1998 Ford F-250 suspension & steering torque specs (control arm, ball joint, tie rod)

→ 1998 Ford F-250 engine & transmission mount torque specs

All 130 1998 Ford F-250 fastener specs

Per-bolt torque, wrench size, and thread spec for the 1998 Ford F-250, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both. 8 of the 130 fastener specs on this page are independently verified against OEM service manuals and manufacturer torque data (last reviewed July 2026).

Wheels — 1998 Ford F-250

Wheel and lug nut spec for the 1998 Ford F-250. Hub bearing bolt - front left tightens to 65 ft-lbs, takes a 15mm driver, runs on M12x1.75 threads, located at the wheel hub. The wheel speed sensor bolt - rear right uses a 8mm drive on a M6x1.0 thread, torqued to 8 ft-lbs at the wheel speed sensor. At the wheel hub, the lug nut - position 2 torques to 140 ft-lbs (190 Nm) (21mm drive, M14x1.5 thread). For the wheel hub, plan for a 21mm tool on a M14x1.5 stud; final torque is 140 ft-lbs (190 Nm) (lug nut - position 5). Hub bearing bolt - rear left tightens to 65 ft-lbs, takes a 15mm driver, runs on M12x1.75 threads, located at the wheel hub. The lug nut - position 4 uses a 21mm drive on a M14x1.5 thread, torqued to 140 ft-lbs (190 Nm) at the wheel hub. At the wheel speed sensor, the wheel speed sensor bolt - front right torques to 8 ft-lbs (8mm drive, M6x1.0 thread). For the wheel hub, plan for a 15mm tool on a M12x1.75 stud; final torque is 65 ft-lbs (hub bearing bolt - front right). Hub bearing bolt - rear right tightens to 65 ft-lbs, takes a 15mm driver, runs on M12x1.75 threads, located at the wheel hub. The wheel speed sensor bolt - rear left uses a 8mm drive on a M6x1.0 thread, torqued to 8 ft-lbs at the wheel speed sensor. At the wheel speed sensor, the wheel speed sensor bolt - front left torques to 8 ft-lbs (8mm drive, M6x1.0 thread). For the wheel hub, plan for a 21mm tool on a M14x1.5 stud; final torque is 140 ft-lbs (190 Nm) (lug nut - position 3). Lug nut - position 1 tightens to 140 ft-lbs (190 Nm), takes a 21mm driver, runs on M14x1.5 threads, located at the wheel hub.

Brakes — 1998 Ford F-250

Brake fasteners on the 1998 Ford F-250 — caliper bracket, slide pins, and banjo bolt torque follow. The caliper bracket bolt - front right lower uses a 21mm drive on a M14x1.5 thread, torqued to 166 ft-lbs (225 Nm) at the caliper bracket. OEM-verified spec. At the caliper bracket, the caliper bracket bolt - front right upper torques to 166 ft-lbs (225 Nm) (21mm drive, M14x1.5 thread). Confirmed against manufacturer service literature. For the caliper bracket, plan for a 21mm tool on a M14x1.5 stud; final torque is 166 ft-lbs (225 Nm) (caliper bracket bolt - rear left upper). This figure is independently verified against OEM service data. Brake line fitting - front left tightens to 12 ft-lbs, takes a 11mm driver, runs on M10x1.0 threads, located at the brake line. The caliper slide pin - front right upper uses a 13mm drive on a M10x1.5 thread, torqued to 25 ft-lbs at the caliper slide. At the caliper bracket, the caliper bracket bolt - rear left lower torques to 166 ft-lbs (225 Nm) (21mm drive, M14x1.5 thread). This figure is independently verified against OEM service data. For the brake line, plan for a 11mm tool on a M10x1.0 stud; final torque is 12 ft-lbs (brake line fitting - rear left). Brake rotor retaining clip tightens to Remove and discard, takes a N/A driver, runs on N/A threads, located at the wheel studs. The caliper slide pin - front left upper uses a 13mm drive on a M10x1.5 thread, torqued to 25 ft-lbs at the caliper slide. At the caliper bracket, the caliper bracket bolt - front left lower torques to 166 ft-lbs (225 Nm) (21mm drive, M14x1.5 thread). OEM-verified spec. For the caliper bracket, plan for a 21mm tool on a M14x1.5 stud; final torque is 166 ft-lbs (225 Nm) (caliper bracket bolt - rear right lower). Confirmed against manufacturer service literature. Brake line fitting - rear right tightens to 12 ft-lbs, takes a 11mm driver, runs on M10x1.0 threads, located at the brake line. The brake line fitting - front right uses a 11mm drive on a M10x1.0 thread, torqued to 12 ft-lbs at the brake line. At the caliper slide, the caliper slide pin - front left lower torques to 25 ft-lbs (13mm drive, M10x1.5 thread). For the caliper to steering knuckle, plan for a 18mm or T-55 Torx tool on a M14x1.5 stud; final torque is 45-55 ft-lbs (front brake caliper bolt). Caliper bracket bolt - rear right upper tightens to 166 ft-lbs (225 Nm), takes a 21mm driver, runs on M14x1.5 threads, located at the caliper bracket. OEM-verified spec. The caliper bracket bolt - front left upper uses a 21mm drive on a M14x1.5 thread, torqued to 166 ft-lbs (225 Nm) at the caliper bracket. Confirmed against manufacturer service literature. At the caliper slide, the caliper slide pin - front right lower torques to 25 ft-lbs (13mm drive, M10x1.5 thread).

Engine — 1998 Ford F-250

Engine bolt-by-bolt torque for the 1998 Ford F-250, including the long block, valve covers, and intake. At the water pump, the water pump bolt - upper torques to 18 ft-lbs (10mm drive, M8x1.25 thread). For the oil pan, plan for a 10mm tool on a M8x1.25 stud; final torque is 18 ft-lbs (oil pan bolt - rear right). Intake manifold bolt - left tightens to 18 ft-lbs, takes a 13mm driver, runs on M10x1.5 threads, located at the intake manifold. The cylinder head bolt - center uses a 10mm drive on a M10x1.5 thread, torqued to 65 ft-lbs at the cylinder head. At the starter motor, the starter bolt - lower torques to 35 ft-lbs (15mm drive, M12x1.75 thread). For the oil pan, plan for the right driver; final torque is 20 ft-lbs (27 Nm) (oil drain plug). Motor mount bolt - front right tightens to 75 ft-lbs, takes a 18mm driver, runs on M14x2.0 threads, located at the engine mount. The alternator bolt - lower uses a 13mm drive on a M10x1.5 thread, torqued to 30 ft-lbs at the alternator bracket. At the valve cover, the valve cover bolt - center torques to 8 ft-lbs (8mm drive, M8x1.25 thread). For the intake manifold, plan for a 13mm tool on a M10x1.5 stud; final torque is 18 ft-lbs (intake manifold bolt - center). Water pump bolt - lower tightens to 18 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the water pump. The valve cover bolt - rear uses a 8mm drive on a M8x1.25 thread, torqued to 8 ft-lbs at the valve cover. At the cylinder head, the cylinder head bolt - front right torques to 65 ft-lbs (10mm drive, M10x1.5 thread). For the water pump, plan for a 10mm tool on a M8x1.25 stud; final torque is 18 ft-lbs (water pump bolt - side). Exhaust manifold stud - center tightens to 25 ft-lbs, takes a 15mm driver, runs on M10x1.5 threads, located at the exhaust manifold. The timing cover bolt - side uses a 10mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the timing cover. At the intake manifold, the intake manifold bolt - rear torques to 18 ft-lbs (13mm drive, M10x1.5 thread). For the oil pan, plan for a 10mm tool on a M8x1.25 stud; final torque is 18 ft-lbs (oil pan bolt - front left). Cylinder head bolt - front left tightens to 65 ft-lbs, takes a 10mm driver, runs on M10x1.5 threads, located at the cylinder head. The starter bolt - upper uses a 15mm drive on a M12x1.75 thread, torqued to 35 ft-lbs at the starter motor. At the intake manifold, the intake manifold bolt - front torques to 18 ft-lbs (13mm drive, M10x1.5 thread). For the intake manifold, plan for a 13mm tool on a M10x1.5 stud; final torque is 18 ft-lbs (intake manifold bolt - right). Exhaust manifold stud - front tightens to 25 ft-lbs, takes a 15mm driver, runs on M10x1.5 threads, located at the exhaust manifold. The timing cover bolt - lower uses a 10mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the timing cover. At the cylinder head, the cylinder head bolt - rear left torques to 65 ft-lbs (10mm drive, M10x1.5 thread). For the valve cover, plan for a 8mm tool on a M8x1.25 stud; final torque is 8 ft-lbs (valve cover bolt - right side). Oil pan bolt - side tightens to 18 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the oil pan. The oil pan bolt - rear left uses a 10mm drive on a M8x1.25 thread, torqued to 18 ft-lbs at the oil pan. At the oil pan, the oil pan bolt - front right torques to 18 ft-lbs (10mm drive, M8x1.25 thread). For the exhaust manifold, plan for a 15mm tool on a M10x1.5 stud; final torque is 25 ft-lbs (exhaust manifold stud - rear). Motor mount bolt - front left tightens to 75 ft-lbs, takes a 18mm driver, runs on M14x2.0 threads, located at the engine mount. The valve cover bolt - front uses a 8mm drive on a M8x1.25 thread, torqued to 8 ft-lbs at the valve cover. At the alternator bracket, the alternator bolt - adjuster torques to 30 ft-lbs (13mm drive, M10x1.5 thread). For the cylinder head, plan for a 10mm tool on a M10x1.5 stud; final torque is 65 ft-lbs (cylinder head bolt - rear right). Motor mount bolt - rear tightens to 75 ft-lbs, takes a 18mm driver, runs on M14x2.0 threads, located at the engine mount. The timing cover bolt - upper uses a 10mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the timing cover. At the valve cover, the valve cover bolt - left side torques to 8 ft-lbs (8mm drive, M8x1.25 thread). For the alternator bracket, plan for a 13mm tool on a M10x1.5 stud; final torque is 30 ft-lbs (alternator bolt - upper).

Drivetrain — 1998 Ford F-250

Drivetrain and driveline fasteners for the 1998 Ford F-250 — axle, transmission, and differential plugs. For the driveshaft to axle/transmission, plan for a 12mm or 1/2" tool on a 5/16"-24 stud; final torque is 15-20 ft-lbs (driveshaft u-joint strap bolt). Lug nuts tightens to 140 ft-lbs (190 Nm), takes a 15/16" driver, runs on 9/16"-18 threads, located at the all four wheels. The differential cover bolt uses a 1/2" or 13mm drive on a 5/16"-18 thread, torqued to 25-35 ft-lbs at the differential housing.

Suspension — 1998 Ford F-250

Suspension and chassis fastener torque for the 1998 Ford F-250 — strut, control arm, and sway bar values. Control arm bolt - rear outer tightens to 125 ft-lbs, takes a 21mm driver, runs on M16x2.0 threads, located at the control arm. The shock absorber bolt - lower uses a 15mm drive on a M12x1.75 thread, torqued to 45 ft-lbs at the shock absorber. At the top of shock mount, the shock absorber nut (upper) torques to 25-35 ft-lbs (15mm or 18mm drive, M10 or M12 thread). For the strut top mount, plan for a 18mm tool on a M14x2.0 stud; final torque is 50 ft-lbs (strut mount bolt - front left). Ball joint nut - rear left tightens to 80 ft-lbs, takes a 19mm driver, runs on M14x1.5 threads, located at the ball joint. The ball joint nut - front left uses a 19mm drive on a M14x1.5 thread, torqued to 80 ft-lbs at the ball joint. At the leaf spring, the leaf spring u-bolt - front left torques to 90 ft-lbs (19mm drive, M14x2.0 thread). For the sway bar bushing, plan for a 13mm tool on a M10x1.5 stud; final torque is 25 ft-lbs (sway bar bushing bracket - front left). Sway bar link nut - front left tightens to 35 ft-lbs, takes a 15mm driver, runs on M10x1.5 threads, located at the sway bar link. The control arm bolt - front inner uses a 21mm drive on a M16x2.0 thread, torqued to 125 ft-lbs at the control arm. At the leaf spring, the leaf spring u-bolt - rear right torques to 90 ft-lbs (19mm drive, M14x2.0 thread). For the sway bar bushing, plan for a 13mm tool on a M10x1.5 stud; final torque is 25 ft-lbs (sway bar bushing bracket - rear right). Ball joint nut - rear right tightens to 80 ft-lbs, takes a 19mm driver, runs on M14x1.5 threads, located at the ball joint. The leaf spring u-bolt - rear left uses a 19mm drive on a M14x2.0 thread, torqued to 90 ft-lbs at the leaf spring. At the sway bar bushing, the sway bar bushing bracket - front right torques to 25 ft-lbs (13mm drive, M10x1.5 thread). For the sway bar link, plan for a 15mm tool on a M10x1.5 stud; final torque is 35 ft-lbs (sway bar link nut - rear left). Control arm bolt - rear inner tightens to 125 ft-lbs, takes a 21mm driver, runs on M16x2.0 threads, located at the control arm. The shock absorber bolt - upper uses a 15mm drive on a M12x1.75 thread, torqued to 45 ft-lbs at the shock absorber. At the axle to leaf spring, the leaf spring u-bolt nut torques to 90-120 ft-lbs (1-1/8" or 24mm drive, 9/16"-18 or 5/8"-18 thread). For the control arm, plan for a 21mm tool on a M16x2.0 stud; final torque is 125 ft-lbs (control arm bolt - front outer). Strut mount bolt - rear right tightens to 50 ft-lbs, takes a 18mm driver, runs on M14x2.0 threads, located at the strut top mount. The sway bar link nut - rear right uses a 15mm drive on a M10x1.5 thread, torqued to 35 ft-lbs at the sway bar link. At the strut top mount, the strut mount bolt - front right torques to 50 ft-lbs (18mm drive, M14x2.0 thread). For the sway bar bushing, plan for a 13mm tool on a M10x1.5 stud; final torque is 25 ft-lbs (sway bar bushing bracket - rear left). Ball joint nut - front right tightens to 80 ft-lbs, takes a 19mm driver, runs on M14x1.5 threads, located at the ball joint. The sway bar link nut - front right uses a 15mm drive on a M10x1.5 thread, torqued to 35 ft-lbs at the sway bar link. At the strut top mount, the strut mount bolt - rear left torques to 50 ft-lbs (18mm drive, M14x2.0 thread). For the leaf spring, plan for a 19mm tool on a M14x2.0 stud; final torque is 90 ft-lbs (leaf spring u-bolt - front right).

Body — 1998 Ford F-250

Body fasteners on the 1998 Ford F-250. The miscellaneous fastener 117 uses a 10mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the various. At the various, the miscellaneous fastener 113 torques to 15 ft-lbs (10mm drive, M8x1.25 thread). For the engine bay & door jamb, plan for a 10mm or 13mm tool on a M6x1.0 or M8x1.25 stud; final torque is 8-12 ft-lbs (fender bolt). Miscellaneous fastener 109 tightens to 15 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the various. The miscellaneous fastener 114 uses a 10mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the various. At the various, the miscellaneous fastener 120 torques to 15 ft-lbs (10mm drive, M8x1.25 thread). For the various, plan for a 10mm tool on a M8x1.25 stud; final torque is 15 ft-lbs (miscellaneous fastener 111). Bed mounting bolt tightens to 50-60 ft-lbs, takes a T-55 Torx or 18mm driver, runs on M12x1.75 threads, located at the truck bed to frame. The miscellaneous fastener 116 uses a 10mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the various. At the various, the miscellaneous fastener 112 torques to 15 ft-lbs (10mm drive, M8x1.25 thread). For the various, plan for a 10mm tool on a M8x1.25 stud; final torque is 15 ft-lbs (miscellaneous fastener 115). Miscellaneous fastener 110 tightens to 15 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the various. The miscellaneous fastener 119 uses a 10mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the various. At the various, the miscellaneous fastener 118 torques to 15 ft-lbs (10mm drive, M8x1.25 thread).

Transmission — 1998 Ford F-250

Transmission fasteners on the 1998 Ford F-250. At the transmission mount, the transmission mount bolt - cross member torques to 65 ft-lbs (18mm drive, M14x2.0 thread). For the shift linkage, plan for a 10mm tool on a M8x1.25 stud; final torque is 15 ft-lbs (shift linkage bolt - pivot). Transmission pan bolt - front tightens to 12 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the transmission pan. The transmission pan bolt - left uses a 10mm drive on a M8x1.25 thread, torqued to 12 ft-lbs at the transmission pan. At the shift linkage, the shift linkage bolt - upper torques to 15 ft-lbs (10mm drive, M8x1.25 thread). For the shift linkage, plan for a 10mm tool on a M8x1.25 stud; final torque is 15 ft-lbs (shift linkage bolt - lower). Cooler line fitting - inlet tightens to 20 ft-lbs, takes a 14mm driver, runs on M12x1.5 threads, located at the transmission cooler. The bell housing bolt - upper uses a 15mm drive on a M12x1.75 thread, torqued to 55 ft-lbs at the bell housing. At the transmission pan, the transmission pan bolt - right torques to 12 ft-lbs (10mm drive, M8x1.25 thread). For the transmission pan, plan for a 10mm tool on a M8x1.25 stud; final torque is 12 ft-lbs (transmission pan bolt - corner). Transmission mount bolt - rear tightens to 65 ft-lbs, takes a 18mm driver, runs on M14x2.0 threads, located at the transmission mount. The transmission mount bolt - front uses a 18mm drive on a M14x2.0 thread, torqued to 65 ft-lbs at the transmission mount. At the bell housing, the bell housing bolt - side torques to 55 ft-lbs (15mm drive, M12x1.75 thread). For the bell housing, plan for a 15mm tool on a M12x1.75 stud; final torque is 55 ft-lbs (bell housing bolt - lower). Transmission pan bolt - rear tightens to 12 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the transmission pan. The cooler line fitting - outlet uses a 14mm drive on a M12x1.5 thread, torqued to 20 ft-lbs at the transmission cooler.

New to torquing wheels? Read our How lug nut torque works — the complete guide for star-pattern sequence, re-torque intervals, and how to read a lug spec — then use the 1998 Ford F-250 numbers above.

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