2018 Nissan Altima 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 | 83-98 ft-lb / 112-133 Nm | |
| Oil Drain Plug | 25-33 ft-lb / 34-45 Nm | |
| Transmission Drain Plug (CVT) | 25-33 ft-lb / 34-45 Nm | |
| Brake Caliper Bracket Bolts (Front) | 85-110 ft-lb / 115-149 Nm | |
| Brake Caliper Bracket Bolts (Rear) | 48-63 ft-lb / 65-85 Nm | |
| Brake Caliper Slide Pins | 20-29 ft-lb / 27-39 Nm | Ensure clean and lubricated pins. |
| Axle Nut (Front) | 165-190 ft-lb / 224-258 Nm | Requires new cotter pin or staked nut, depending on design. |
| Spark Plugs | 14-22 ft-lb / 19-30 Nm | For 2.5L and 3.5L engines. |
| Valve Cover Bolts | 5.5-7.2 ft-lb / 7-10 Nm | Torque in sequence to avoid warping. |
| Intake Manifold Bolts (Upper) | 8-12 ft-lb / 11-16 Nm | Torque in sequence. |
| Intake Manifold Bolts (Lower) | 18-22 ft-lb / 24-30 Nm | Torque in sequence. |
Wheel Lug Torque Pattern
Always tighten lug nuts in a star pattern (cross pattern) to ensure even clamping force across the wheel hub. This helps prevent wheel distortion and ensures the wheel seats properly.
Brake Torque Notes
When working on the brakes of your 2018 Nissan Altima, proper torque is paramount for safety. For the brake caliper bracket bolts, ensure threads are clean and free of rust or debris. Never reuse old hardware that shows signs of stretching or damage. For brake caliper slide pins, it's crucial to clean the old grease from the pins and caliper bores and apply new, high-temperature silicone-based brake lubricant. This ensures smooth operation of the caliper and even pad wear.
Why Torque Matters
Fastener torque isn't just a suggestion; it's a critical engineering specification. Under-torquing a fastener can lead to premature loosening, vibrations, and component failure. For example, an under-torqued wheel lug nut could lead to a wheel detaching from the vehicle, while an under-torqued brake caliper bolt could result in catastrophic brake failure. Conversely, over-torquing a fastener can be equally damaging. It can stretch or strip threads, damage the fastener itself, or even crack the component it's securing. Over-torquing spark plugs, for instance, can crack the cylinder head, leading to significant repair costs. For critical fasteners like those on the braking system, suspension, and engine, adhering to manufacturer-specified torque values ensures the integrity of the repair and the safety of the vehicle's occupants.
Disclaimer: Always consult your official OEM service manual for the most accurate and up-to-date torque specifications for your specific 2018 Nissan Altima model and trim. This guide provides general reference values; critical fasteners should always be verified in the OEM service manual.
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More specs for the 2018 Nissan Altima
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 Nissan Altima 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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