1998 Dodge Ram 3500 Lug Nut Torque & Bolt Specs

The 1998 Dodge Ram 3500 lug nut torque is 100 ft-lbs (135 Nm), tightened with a 22mm socket on M12x1.5 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 (135 Nm) · Socket size: 22mm · Thread: M12x1.5.

This page is the OEM-referenced fastener summary for the 1998 Dodge Ram 3500. 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.

Stellantis (Jeep/Ram/Dodge/Chrysler) torque values: Wrangler/Cherokee lug nuts spec 100 ft-lbs (135 Nm), Ram 1500 specs 135 ft-lbs (183 Nm), Ram 2500/3500 specs 160 ft-lbs (217 Nm). Most use a 19mm or 22mm socket with M14x1.5 thread on trucks. The Wrangler's hub-centric ring is critical — do not run hub-piloted wheels without it.

Common fastener categories on the 1998 Dodge Ram 3500

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 Dodge Ram 3500 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 Dodge Ram 3500?

The OEM-specified lug-nut torque for the 1998 Dodge Ram 3500 is 100 ft-lbs (135 Nm), using a 22mm socket on M12x1.5 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 1998 Dodge Ram 3500 lug nuts?

The 1998 Dodge Ram 3500 uses a 22mm 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 Dodge Ram 3500 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 Dodge Ram 3500 years

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

→ 1998 Dodge Ram 3500 oil drain plug torque & size

All 13 1998 Dodge Ram 3500 fastener specs

Per-bolt torque, wrench size, and thread spec for the 1998 Dodge Ram 3500, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both.

Wheels — 1998 Dodge Ram 3500

Wheel and lug nut spec for the 1998 Dodge Ram 3500. The inner rear lug nut (drw) uses a 22mm drive on a M12x1.5 thread, torqued to 100 ft-lbs (135 Nm) at the rear inner wheel. At the all four corners, the lug nut torques to 100 ft-lbs (135 Nm) (22mm drive, M12x1.5 thread). For the rear outer wheel, plan for a 22mm tool on a M12x1.5 stud; final torque is 100 ft-lbs (135 Nm) (outer rear lug nut (drw)).

Brakes — 1998 Dodge Ram 3500

Brake fasteners on the 1998 Dodge Ram 3500 — caliper bracket, slide pins, and banjo bolt torque follow. At the front axle, caliper bracket, the front brake caliper bracket bolt torques to 125 ft-lbs (18mm drive, M14x2.0 thread). For the front caliper, plan for a 13mm tool on a M10x1.5 stud; final torque is 25-35 ft-lbs (front caliper slide pin).

Engine — 1998 Dodge Ram 3500

Engine bolt-by-bolt torque for the 1998 Dodge Ram 3500, including the long block, valve covers, and intake. For the cylinder head, plan for a 9/16" tool on a M14x1.25 stud; final torque is 20-30 ft-lbs (spark plug). Oil drain plug tightens to 20-35 ft-lbs, takes a 15mm driver, runs on M18x1.5 threads, located at the oil pan. The glow plug uses a 12mm drive on a M12x1.25 thread, torqued to 15 ft-lbs at the cylinder head.

Drivetrain — 1998 Dodge Ram 3500

Drivetrain and driveline fasteners for the 1998 Dodge Ram 3500 — axle, transmission, and differential plugs. Transfer case drain plug tightens to 20-25 ft-lbs, takes a 24mm driver, runs on M20x1.5 threads, located at the transfer case. The front differential fill plug uses a See notes drive on a 3/8" sq thread, torqued to 25 ft-lbs at the front differential.

Suspension — 1998 Dodge Ram 3500

Suspension and chassis fastener torque for the 1998 Dodge Ram 3500 — strut, control arm, and sway bar values. The rear leaf spring u-bolt nut uses a 22mm drive on a M14x2.0 thread, torqued to 135-175 ft-lbs at the rear leaf spring.

Steering — 1998 Dodge Ram 3500

Steering linkage fasteners on the 1998 Dodge Ram 3500. At the tie rod end, the tie rod end nut torques to 60-75 ft-lbs (22mm drive, M14x1.5 thread).

Axle / Drivetrain — 1998 Dodge Ram 3500

Axle / Drivetrain fasteners on the 1998 Dodge Ram 3500. For the front wheel hub, plan for a See notes tool on a M34x1.5 stud; final torque is 160-180 ft-lbs (front axle hub nut (4wd)).

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 Dodge Ram 3500 numbers above.

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