2004 Saturn Ion Lug Nut Torque & Bolt Specs

The 2004 Saturn Ion lug nut torque is 85 ft-lbs (115 Nm), tightened with a 19mm 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: 85 ft-lbs (115 Nm) · Socket size: 19mm · Thread: M12x1.5.

This page is the OEM-referenced fastener summary for the 2004 Saturn Ion. 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.

For the 2004 Saturn Ion, fasteners follow metric standards typical of mid-2000s Saturn engineering. Always confirm spec against the factory service manual before tightening safety-critical fasteners (suspension, brake, steering, head bolts).

Common fastener categories on the 2004 Saturn Ion

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 2004 model-year work: Always use a calibrated torque wrench for safety-critical fasteners, and replace lock washers and crush washers on every 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 2004 Saturn Ion?

The OEM-specified lug-nut torque for the 2004 Saturn Ion is 85 ft-lbs (115 Nm), using a 19mm 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 2004 Saturn Ion lug nuts?

The 2004 Saturn Ion 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 2004 Saturn Ion 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 Saturn Ion years

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

→ 2004 Saturn Ion suspension & steering torque specs (control arm, ball joint, tie rod)

All 12 2004 Saturn Ion fastener specs

Per-bolt torque, wrench size, and thread spec for the 2004 Saturn Ion, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both. 2 of the 12 fastener specs on this page are independently verified against OEM service manuals and manufacturer torque data.

Wheels — 2004 Saturn Ion

Wheel and lug nut spec for the 2004 Saturn Ion. plan for a 19mm tool on a M12x1.5 stud; final torque is 85 ft-lbs (115 Nm) (lug nut).

Brakes — 2004 Saturn Ion

Brake fasteners on the 2004 Saturn Ion — caliper bracket, slide pins, and banjo bolt torque follow. Front brake caliper guide-pin bolt tightens to 23 ft-lbs (31 Nm).

Engine — 2004 Saturn Ion

Engine bolt-by-bolt torque for the 2004 Saturn Ion, including the long block, valve covers, and intake. The engine oil drain plug, torqued to 18 ft-lbs (25 Nm). OEM-verified spec. The spark plug torques to 15 ft-lbs (20 Nm) (5/8 in drive). Confirmed against manufacturer service literature.

Drivetrain — 2004 Saturn Ion

Drivetrain and driveline fasteners for the 2004 Saturn Ion — axle, transmission, and differential plugs. The front hub/axle nut torques to 155 ft-lbs (210 Nm).

Suspension — 2004 Saturn Ion

Suspension and chassis fastener torque for the 2004 Saturn Ion — strut, control arm, and sway bar values. plan for the right driver; final torque is 85 ft-lbs (115 Nm) (lower control arm frame bolts). Front lower ball joint nut tightens to 60 ft-lbs (81 Nm). The front strut upper mount nuts, torqued to 20 ft-lbs (27 Nm). The front strut-to-knuckle bolts torques to 100 ft-lbs (136 Nm). plan for the right driver; final torque is 20 ft-lbs (27 Nm) (front sway bar link nut). Front wheel hub/bearing bolts tightens to 70 ft-lbs (95 Nm).

Steering — 2004 Saturn Ion

Steering linkage fasteners on the 2004 Saturn Ion. Outer tie rod end nut tightens to 35 ft-lbs (47 Nm).

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 2004 Saturn Ion numbers above.

Loading the interactive 2004 Saturn Ion fastener lookup with per-bolt filtering, part links, and torque tools…