1998 Subaru Forester Lug Nut Torque & Bolt Specs

The 1998 Subaru Forester lug nut torque is 89 ft-lbs (120 Nm), tightened with a 19mm socket on M12x1.25 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: 89 ft-lbs (120 Nm) · Socket size: 19mm · Thread: M12x1.25.

This page is the OEM-referenced fastener summary for the 1998 Subaru Forester. 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.

Subaru lug-nut torque is 89 ft-lbs (120 Nm) on every modern model with an M12x1.25 thread and 19mm socket. Subaru is one of the only Japanese makes still using the smaller 19mm socket — bring it specifically. The boxer engine's drain plug is on the bottom of the block (not the pan) and uses an unusual 17mm head.

Common fastener categories on the 1998 Subaru Forester

Wheel / lug nut torque and thread spec (covered above)
Brake caliper bracket bolts (typically 80-130 ft-lbs) and slide/guide pins (18-35 ft-lbs)
Engine oil drain plug torque — rarely above 30 ft-lbs; always use a new crush washer
Transmission pan, valve cover, and intake manifold bolts (low torque, often 89-106 in-lbs)
Suspension control arm, sway bar, tie rod end and ball joint torque
Spark plug torque (typically 10-15 ft-lbs on aluminum heads — do not exceed)
Differential cover bolts (RWD/4WD only) and transfer case fasteners

Repair guidance for this model year

Heads up for 1998 Subaru Forester 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

Metric socket set (8mm-22mm), 6-point impact-rated
Calibrated torque wrench (10-150 ft-lbs covers most automotive jobs; add a 0-250 ft-lbs wrench for truck lug nuts)
Breaker bar (24" minimum) for initial loosening
Penetrating oil (PB Blaster or Kroil) for any fastener over 5 years old
Anti-seize on stainless or dissimilar-metal threads; thread-locker (Loctite blue) on critical reassembly

Frequently asked questions

What is the lug nut torque on a 1998 Subaru Forester?

The OEM-specified lug-nut torque for the 1998 Subaru Forester is 89 ft-lbs (120 Nm), using a 19mm socket on M12x1.25 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 Subaru Forester lug nuts?

The 1998 Subaru Forester uses a 19mm 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 Subaru Forester 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 Subaru Forester years

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

→ 1998 Subaru Forester oil drain plug torque & size

All 9 1998 Subaru Forester fastener specs

Per-bolt torque, wrench size, and thread spec for the 1998 Subaru Forester, 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 9 fastener specs on this page are independently verified against OEM service manuals and manufacturer torque data (last reviewed June 2026).

Wheels — 1998 Subaru Forester

Wheel and lug nut spec for the 1998 Subaru Forester. For the wheel hub, plan for a 19mm tool on a M12x1.25 stud; final torque is 89 ft-lbs (120 Nm) (lug nut).

Brakes — 1998 Subaru Forester

Brake fasteners on the 1998 Subaru Forester — caliper bracket, slide pins, and banjo bolt torque follow. Rear brake caliper bracket bolt tightens to 48 ft-lbs, takes a 14mm driver, runs on M12x1.25 threads, located at the rear knuckle. The front brake caliper bracket bolt uses a 17mm drive on a M14x1.5 thread, torqued to 80 ft-lbs at the front knuckle.

Engine — 1998 Subaru Forester

Engine bolt-by-bolt torque for the 1998 Subaru Forester, including the long block, valve covers, and intake. The oil drain plug is a M16x1.5 thread, torqued to 31 ft-lbs (42 Nm) at the oil pan. OEM-verified spec. At the cylinder head, the spark plug torques to 13 ft-lbs (18 Nm) (14mm Socket drive, M12x1.25 thread).

Drivetrain — 1998 Subaru Forester

Drivetrain and driveline fasteners for the 1998 Subaru Forester — axle, transmission, and differential plugs. At the rear knuckle, the rear hub and bearing assembly bolts torques to 48 ft-lbs (14mm drive, M12 x 1.25 thread). For the front knuckle, plan for a 17mm tool on a M12 x 1.25 stud; final torque is 48 ft-lbs (front hub and bearing assembly bolts).

Suspension — 1998 Subaru Forester

Suspension and chassis fastener torque for the 1998 Subaru Forester — strut, control arm, and sway bar values. For the front strut to knuckle, plan for a 19mm tool on a M14 x 1.5 stud; final torque is 115 ft-lbs (front strut to knuckle bolts). Rear shock absorber lower bolt tightens to 74 ft-lbs, takes a 17mm driver, runs on M12 x 1.25 threads, located at the rear knuckle.

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 Subaru Forester numbers above.

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