2018 Kia Cadenza Lug Nut Torque & Bolt Specs

The 2018 Kia Cadenza lug nut torque is 80 ft-lbs (108 Nm), tightened with a 21mm 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: 80 ft-lbs (108 Nm) · Socket size: 21mm · Thread: M12x1.5.

This page is the OEM-referenced fastener summary for the 2018 Kia Cadenza. 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.

Hyundai/Kia lug-nut torque is 79-88 ft-lbs on nearly all passenger models, M12x1.5 thread, 21mm socket. The Tucson, Sportage, and Santa Fe all use the same fastener spec. Hyundai's oil drain plug threads are unusually fine-pitch and strip easily — always use a torque wrench, not feel.

Common fastener categories on the 2018 Kia Cadenza

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 Kia Cadenza?

The OEM-specified lug-nut torque for the 2018 Kia Cadenza is 80 ft-lbs (108 Nm), using a 21mm 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 2018 Kia Cadenza lug nuts?

The 2018 Kia Cadenza 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 Kia Cadenza 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 Kia Cadenza years

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

→ 2018 Kia Cadenza oil drain plug torque & size

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

All 35 2018 Kia Cadenza fastener specs

Per-bolt torque, wrench size, and thread spec for the 2018 Kia Cadenza, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both. 5 of the 35 fastener specs on this page are independently verified against OEM service manuals and manufacturer torque data (last reviewed June 2026).

Wheels — 2018 Kia Cadenza

Wheel and lug nut spec for the 2018 Kia Cadenza. At the all four wheels, the lug nut torques to 80 ft-lbs (108 Nm) (21mm drive, M12x1.5 thread).

Engine — 2018 Kia Cadenza

Engine bolt-by-bolt torque for the 2018 Kia Cadenza, including the long block, valve covers, and intake. For the cylinder head, plan for a 16mm tool on a M14 x 1.25 stud; final torque is 15-22 lb-ft (spark plug). Engine mount bolt tightens to 47-62 ft-lbs, takes a 17mm driver, runs on M12 x 1.25 threads, located at the engine mount. The oil filter uses a Oil Filter Wrench drive on a 3/4-16 UNF thread, torqued to Hand tight + 3/4 turn at the engine block. OEM-verified spec. At the valve cover, the valve cover bolt torques to 7-9 ft-lbs (10mm drive, M6 x 1.0 thread). For the exhaust manifold, plan for a 14mm tool on a M10 x 1.5 stud; final torque is 29-33 lb-ft (exhaust manifold stud). Oil drain plug washer tightens to N/A, takes a N/A driver, runs on N/A threads, located at the oil drain plug. The intake manifold bolt uses a 12mm drive on a M8 x 1.25 thread, torqued to 14-17 lb-ft at the intake manifold. At the oil pan, the oil drain plug torques to 25 ft-lbs (34 Nm) (17mm drive, M14x1.5 thread).

Suspension — 2018 Kia Cadenza

Suspension and chassis fastener torque for the 2018 Kia Cadenza — strut, control arm, and sway bar values. Shock absorber upper mount nut tightens to 33-43 ft-lbs, takes a 17mm driver, runs on M12 x 1.25 threads, located at the shock tower. The strut tower nut uses a 14mm drive on a M10 x 1.5 thread, torqued to 33-43 lb-ft at the strut tower. At the ball joint to knuckle, the ball joint pinch bolt torques to 80 ft-lbs (108 Nm) (17mm drive, M12 x 1.25 thread). Confirmed against manufacturer service literature. For the shock mount, plan for a 17mm tool on a M12 x 1.75 stud; final torque is 47-58 lb-ft (shock absorber mount bolt). Control arm bolt tightens to 72-87 lb-ft, takes a 18mm driver, runs on M14 x 1.5 threads, located at the control arm. The ball joint bolt uses a 17mm drive on a M12 x 1.75 thread, torqued to 80 ft-lbs (108 Nm) at the ball joint. Confirmed against manufacturer service literature. At the control arm to frame, the front upper control arm bolt torques to 72-87 ft-lbs (17mm drive, M12 x 1.25 thread). For the shock to knuckle, plan for a 17mm tool on a M12 x 1.25 stud; final torque is 101-116 ft-lbs (shock absorber lower bolt). Front lower control arm bolt tightens to 101-116 ft-lbs, takes a 19mm driver, runs on M14 x 1.5 threads, located at the control arm to frame. The sway bar link nut uses a 14mm drive on a M10 x 1.25 thread, torqued to 36-47 ft-lbs at the sway bar end link.

Wheel — 2018 Kia Cadenza

Wheel fasteners on the 2018 Kia Cadenza. The center cap retaining clip uses a N/A drive on a N/A thread, torqued to N/A at the wheel center. At the wheel center cap, the center cap clip torques to Hand tight (N/A drive, N/A thread). For the wheel hub, plan for a N/A tool on a M12 x 1.5 stud; final torque is Press fit (wheel stud).

Transmission — 2018 Kia Cadenza

Transmission fasteners on the 2018 Kia Cadenza. At the transmission pan, the transmission pan bolt torques to 7-9 ft-lbs (10mm drive, M6 x 1.0 thread). For the transmission mount, plan for a 17mm tool on a M12 x 1.75 stud; final torque is 47-62 lb-ft (transmission mount bolt). Transmission crossmember bolt tightens to 65-80 ft-lbs, takes a 19mm driver, runs on M14 x 1.5 threads, located at the crossmember to frame. The crossmember bolt uses a 19mm drive on a M14 x 1.5 thread, torqued to 65-80 lb-ft at the transmission crossmember.

Brake — 2018 Kia Cadenza

Brake fasteners on the 2018 Kia Cadenza. For the brake caliper bracket, plan for a 17mm tool on a M14x1.5 stud; final torque is 58-72 lb-ft (caliper bracket bolt). Brake hose banjo bolt tightens to 18-22 lb-ft, takes a 12mm driver, runs on M10 x 1.0 threads, located at the brake caliper. The brake caliper guide pin bolt uses a 14mm drive on a M10x1.25 thread, torqued to 16-23 ft-lbs at the caliper slide pin. Confirmed against manufacturer service literature. At the caliper to bracket, the brake caliper mounting bolt torques to 58-72 ft-lbs (17mm drive, M12x1.25 thread). For the rotor to hub, plan for a Phillips #2 tool on a M6 x 1.0 stud; final torque is 7-9 ft-lbs (brake rotor set screw). Caliper guide pin tightens to 16-23 lb-ft, takes a 13mm driver, runs on M10x1.25 threads, located at the brake caliper. Confirmed against manufacturer service literature. The brake rotor screw uses a Phillips #2 drive on a M6 x 1.0 thread, torqued to 5-7 lb-ft at the brake rotor.

Lug Nut — 2018 Kia Cadenza

Lug Nut fasteners on the 2018 Kia Cadenza. Wheel lug nut tightens to 80 ft-lbs (108 Nm), takes a 21mm driver, runs on M12x1.5 threads, located at the wheel.

Oil Drain Plug — 2018 Kia Cadenza

Oil Drain Plug fasteners on the 2018 Kia Cadenza. The engine oil drain plug uses a 17mm drive on a M14x1.5 thread, torqued to 25 ft-lbs (34 Nm) at the oil pan.

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 Kia Cadenza numbers above.

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