2018 Jeep Wrangler Lug Nut Torque & Bolt Specs

The 2018 Jeep Wrangler lug nut torque is 130 ft-lbs (176 Nm), 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: 130 ft-lbs (176 Nm) · Socket size: 21mm · Thread: M14x1.5.

This page is the OEM-referenced fastener summary for the 2018 Jeep Wrangler. 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 2018 Jeep Wrangler

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

For 2018 model-year work: This era introduced widespread torque-to-yield (TTY) bolts on head, main, and crank pulley fasteners. TTY bolts stretch permanently when torqued and must not be reused — the spec calls for a fresh bolt every time. Always verify TTY status against the FSM before reassembly.

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 2018 Jeep Wrangler?

The OEM-specified lug-nut torque for the 2018 Jeep Wrangler is 130 ft-lbs (176 Nm), 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 2018 Jeep Wrangler lug nuts?

The 2018 Jeep Wrangler 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 2018 Jeep Wrangler 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 Jeep Wrangler years

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

→ 2018 Jeep Wrangler suspension & steering torque specs (control arm, ball joint, tie rod)

All 42 2018 Jeep Wrangler fastener specs

Per-bolt torque, wrench size, and thread spec for the 2018 Jeep Wrangler, 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 42 fastener specs on this page are independently verified against OEM service manuals and manufacturer torque data (last reviewed July 2026).

Wheels — 2018 Jeep Wrangler

Wheel and lug nut spec for the 2018 Jeep Wrangler. For the wheel hub, plan for a 21mm tool on a M14x1.5 stud; final torque is 130 ft-lbs (176 Nm) (wheel lug nut).

Brakes — 2018 Jeep Wrangler

Brake fasteners on the 2018 Jeep Wrangler — caliper bracket, slide pins, and banjo bolt torque follow. Brake line bracket bolt tightens to 89 in-lbs, takes a 10mm driver, runs on M6x1.0 threads, located at the frame rail. The caliper bracket bolt uses a 21mm drive on a M14x2.0 thread, torqued to 148 ft-lbs (200 Nm) at the steering knuckle. OEM-verified spec.

Engine — 2018 Jeep Wrangler

Engine bolt-by-bolt torque for the 2018 Jeep Wrangler, including the long block, valve covers, and intake. The cam sprocket bolt uses a 15mm drive on a M12x1.5 thread, torqued to 65 ft-lbs at the camshaft. At the rod, the rod cap bolt torques to Step 1: 20 ft-lbs, Step 2: 90° (12mm drive, M9x1.0 thread). For the bracket, plan for a 13mm tool on a M8x1.25 stud; final torque is 25 ft-lbs (power steering pump bolt). Timing chain tensioner tightens to 12 ft-lbs, takes a 10mm driver, runs on M6x1.0 threads, located at the front cover. The oil drain plug uses a 13mm drive on a M12x1.75 thread, torqued to 25 ft-lbs at the oil pan. At the manifold, the turbocharger mount bolt torques to 25 ft-lbs (13mm drive, M8x1.25 thread). For the air box, plan for a 7mm tool on a Worm Drive stud; final torque is 35 in-lbs (air intake tube clamp). Intake manifold bolt tightens to 18 ft-lbs, takes a 13mm driver, runs on M8x1.25 threads, located at the cylinder head. The engine oil drain plug uses a 13mm drive on a M14x1.5 thread, torqued to 20 ft-lbs (27 Nm). At the front cover, the timing cover bolt torques to 12 ft-lbs (10mm drive, M6x1.0 thread). For the front cover, plan for a 10mm tool on a M6x1.0 stud; final torque is 12 ft-lbs (oil pump bolt). Wastegate actuator bolt tightens to 12 ft-lbs, takes a 10mm driver, runs on M6x1.0 threads, located at the turbo. The spark plug uses a 14mm drive on a M12x1.25 thread, torqued to 13 ft-lbs (18 Nm). At the oil pan, the oil pan bolt torques to 12 ft-lbs (10mm drive, M6x1.0 thread). For the water pump, plan for a 36mm tool on a M24x1.5 stud; final torque is 65 ft-lbs (fan clutch nut). Cylinder head bolt tightens to Step 1: 30 ft-lbs, Step 2: 90°, takes a 12mm driver, runs on M10x1.5 threads, located at the block. The a/c compressor bolt uses a 13mm drive on a M8x1.25 thread, torqued to 25 ft-lbs at the bracket.

Drivetrain — 2018 Jeep Wrangler

Drivetrain and driveline fasteners for the 2018 Jeep Wrangler — axle, transmission, and differential plugs. At the differential, the driveshaft u-joint strap torques to 15 ft-lbs (8mm drive, M6x1.0 thread).

Suspension — 2018 Jeep Wrangler

Suspension and chassis fastener torque for the 2018 Jeep Wrangler — strut, control arm, and sway bar values. For the frame, plan for a 18mm tool on a M12x1.75 stud; final torque is 75 ft-lbs (shock mount bolt).

Steering — 2018 Jeep Wrangler

Steering linkage fasteners on the 2018 Jeep Wrangler. Steering box mount bolt tightens to 75 ft-lbs, takes a 18mm driver, runs on M12x1.75 threads, located at the frame rail. The drag link adjustment sleeve uses a 1-1/16" drive on a Right/Left Thread thread, torqued to 65 ft-lbs at the drag link.

Body — 2018 Jeep Wrangler

Body fasteners on the 2018 Jeep Wrangler. The bumper mount bolt uses a 18mm drive on a M12x1.75 thread, torqued to 75 ft-lbs at the frame rail. At the cowl, the windshield frame bolt torques to 27 ft-lbs (13mm drive, M8x1.25 thread). For the hood frame, plan for a 13mm tool on a M8x1.25 stud; final torque is 27 ft-lbs (hood hinge bolt).

Electrical — 2018 Jeep Wrangler

Electrical fasteners on the 2018 Jeep Wrangler. At the radio chassis to body, the radio ground wire bolt torques to 8 ft-lbs (10mm drive, M6x1.0 thread). For the fuel pump to frame, plan for a 10mm tool on a M6x1.0 stud; final torque is 8 ft-lbs (fuel pump ground wire bolt). Ground strap bolt tightens to 89 in-lbs, takes a 10mm driver, runs on M6x1.0 threads, located at the frame rail. The alternator pivot bolt uses a 15mm drive on a M10x1.5 thread, torqued to 40 ft-lbs at the engine block. At the engine block, the starter mounting bolt torques to 45 ft-lbs (15mm drive, M10x1.5 thread). For the body to frame, plan for a 10mm tool on a M6x1.0 stud; final torque is 8 ft-lbs (body ground strap bolt). Battery ground cable bolt tightens to 15 ft-lbs, takes a 13mm driver, runs on M8x1.25 threads, located at the battery negative to frame. The tipm ground bolt uses a 10mm drive on a M6x1.0 thread, torqued to 8 ft-lbs at the tipm to body. At the abs module to frame, the abs module ground bolt torques to 8 ft-lbs (10mm drive, M6x1.0 thread). For the starter to engine block, plan for a 13mm tool on a M8x1.25 stud; final torque is 15 ft-lbs (starter ground cable bolt).

Interior — 2018 Jeep Wrangler

Interior fasteners on the 2018 Jeep Wrangler. For the firewall, plan for a 10mm tool on a M6x1.0 stud; final torque is 89 in-lbs (dashboard mount bolt). Seat track bolt tightens to 35 ft-lbs, takes a 13mm driver, runs on M8x1.25 threads, located at the floor pan. The door latch bolt uses a 10mm drive on a M6x1.0 thread, torqued to 89 in-lbs at the door edge. At the door frame, the door hinge bolt torques to 27 ft-lbs (13mm drive, M8x1.25 thread). For the door panel, plan for a 8mm tool on a Push-Type stud; final torque is Hand Tight (door panel clip).

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 2018 Jeep Wrangler numbers above.

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