2018 Subaru Outback Torque Specifications
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick reference
| Fastener | Torque (ft-lb / Nm) | Notes |
|---|---|---|
| Wheel lug nuts | 89 / 120 | |
| Oil drain plug | 31 / 42 | Crush washer replacement recommended |
| Transmission drain plug | 18 / 25 | |
| Front brake caliper bracket bolts | 80 / 108 | |
| Rear brake caliper bracket bolts | 50 / 68 | |
| Front brake caliper slide pins | 20 / 27 | |
| Rear brake caliper slide pins | 20 / 27 | |
| Front axle nut | 162 / 220 | |
| Rear axle nut | 140 / 190 | |
| Spark plugs | 15 / 21 | |
| Valve cover bolts | 4.7 / 6.4 | Seating sequence matters |
| Intake manifold bolts | 19 / 26 | Seating sequence matters |
Wheel lug torque pattern
When tightening the wheel lug nuts on your 2018 Subaru Outback, it is critical to use a star or cross pattern. This ensures that the wheel is seated evenly against the hub, preventing warping of the brake rotor and ensuring a secure fit. Never tighten lug nuts in a circular pattern.
Start by tightening all lug nuts by hand until they are snug. Then, using a torque wrench, tighten them in the star pattern to the final torque specification. It is also good practice to re-check the lug nut torque after driving 50-100 miles.
Brake torque notes
The torque specifications for brake components are especially critical. Over-tightening can damage the threads or cause the caliper to bind, while under-tightening can lead to a catastrophic failure. Always use a calibrated torque wrench for these fasteners.
When replacing brake pads, it is good practice to clean and lubricate the caliper slide pins. This ensures that the caliper can move freely and apply pressure to the pads evenly.
Disclaimer: The torque specifications listed above are for reference only. Critical fasteners should always be verified in the OEM service manual for your specific vehicle.
Why torque matters
Torque is a rotational force that is applied to a fastener, such as a nut or bolt. Applying the correct amount of torque is critical for ensuring that the fastener is tight enough to hold the components together, but not so tight that it damages the fastener or the components.
An under-torqued fastener can loosen over time, leading to a variety of problems, from rattles and squeaks to catastrophic failure. An over-torqued fastener can strip threads, break, or damage the components it is holding together.
Using a torque wrench is the only way to ensure that you are applying the correct amount of torque to a fastener. Torque wrenches are available in a variety of styles and price ranges, and are a must-have tool for any DIY mechanic.
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More specs for the 2018 Subaru Outback
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2018 Subaru Outback Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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