Showing specs for all NA & NB Miatas

Accessory belts & alternator

Alternator and power steering belt mounting and adjustment fasteners.

Use this checklist to track fasteners you handle. It is not a complete repair procedure or a verified disassembly order. Follow your factory manual for access, support, tightening sequences and inspections. Select your car and check each variant before using a value.

Checklist: https://miatatorque.com/jobs/accessory-belts/
All NA & NB variants; select your car to narrow the list.

You’ll replace

No replacement list is recorded in these specs. Check the cited procedures for seals, gaskets and single-use hardware.

Fluids & settings

Fluid types, capacities and settings have not been catalogued for this job. Check your factory manual before filling or adjusting.

1. Alternator mounting and adjustment

Alternator lower mounting bolt and nut
NA 1990–1997 (B6/BP); NB 1999–2000 (BP-4W)
Factory manual27–38 ft·lb37–52 N·m37–52 N·m27–38 ft·lb
Notes
Callout (1) in the manual's figure: the lower through-bolt.
  • 1990 Mazda MX-5 Miata Workshop Manual — Page G–12Printed: “Bolt, Nut (1): 37—52 N·m (3.8—5.3 m-kg, 27—38 ft-lb)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–7Printed: “B: 38–51 N·m (3.8–5.3 kgf·m, 28–38 ft·lbf)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page G–10Printed: “38–51 {3.8–5.3, 27–38}”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–10–2Printed: “38–51 {3.8–5.1, 28–38}”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–17–3Printed: “38—51 {3.8—5.3, 28—38}”
Alternator upper (adjusting-side) bolt
NA 1990–1997 (B6/BP); NB 1999–2000 (BP-4W)
Factory manual14–19 ft·lb19–25 N·m19–25 N·m14–19 ft·lb
Notes
Callout (2) in the manual's figure. Nut (3) on the same 1990 page is 9.8–15 N·m (87–130 in·lb).
  • 1990 Mazda MX-5 Miata Workshop Manual — Page G–12Printed: “Bolt (2): 19—25 N·m (1.9—2.6 m-kg, 14—19 ft-lb)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–7Printed: “A: 19–25 N·m (1.9–2.6 kgf·m, 14–18 ft·lbf)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page G–10Printed: “19–25 {1.9–2.6, 14–18}”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–10–2Printed: “19–25 {1.9–2.6, 14–18}”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–17–3Printed: “19—25 {1.9—2.6, 14—18}”
Alternator bracket bolts
NA 1994–1997 (BP)
Factory manual48–65 ft·lb64–89 N·m64–89 N·m48–65 ft·lb
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–79Printed: “64–89 N·m (6.5–9.1 kgf·m, 48–65 ft·lbf)”
Alternator mounting bolt A (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
Factory manual28–38 ft·lb38–52 N·m38–52 N·m28–38 ft·lb
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 694Printed: “38—52 N·m {3.8—5.3 kgf·m, 28—38 ft·lbf}”
Alternator adjusting lock bolt B (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
Factory manual14–18 ft·lb19–25 N·m19–25 N·m14–18 ft·lb
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 694Printed: “19—25 N·m {1.9—2.6 kgf·m, 14—18 ft·lbf}”
Alternator strap to engine bolt (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
Factory manual28–38 ft·lb38–51 N·m38–51 N·m28–38 ft·lb
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 646Printed: “38—51 {3.8—5.3, 28—38} N·m {kgf·m, ft·lbf}”

2. Power steering and A/C belt hardware

Power steering pump bracket bolts
NA 1994–1997 (BP); NB 1999–2000 (BP-4W); NA 1990–1993 (B6)
Factory manual28–38 ft·lb38–51 N·m38–51 N·m28–38 ft·lb
  • 1990 Mazda MX-5 Miata Workshop Manual — Page B–83Printed: “37—52 N·m (3.8—5.3 m-kg, 27—38 ft-lb)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–82Printed: “38–51 N·m (3.8–5.3 kgf·m, 28–38 ft·lbf)”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–12–6Printed: “38–51 {3.8–5.3, 28–38}”
Power steering pump lower mounting bolt/nut (B)
NA 1994–1997 (BP); NB 1999–2000 (BP-4W)
Factory manual27–39 ft·lb37–53 N·m37–53 N·m27–39 ft·lb
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–7Printed: “B: 37–53 N·m (3.7–5.5 kgf·m, 27–39 ft·lbf)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page N–38Printed: “B: 37–53 N·m (3.7–5.5 kgf·m, 27–39 ft·lbf)”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–10–2Printed: “37–53 {3.7–5.5, 27–39}”
Power steering pump adjusting-side nut (C)
NA 1994–1997 (BP); NB 1999–2000 (BP-4W); NA 1990–1993 (B6)
Factory manual14–18 ft·lb19–25 N·m19–25 N·m14–18 ft·lb
  • 1990 Mazda MX-5 Miata Workshop Manual — Page B–6Printed: “19—25 N·m (1.9—2.6 m-kg, 14—19 ft-lb)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–7Printed: “C: 19–25 N·m (1.9–2.6 kgf·m, 14–18 ft·lbf)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page N–38Printed: “C: 19–25 N·m (1.9–2.6 kgf·m, 14–18 ft·lbf)”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–10–2Printed: “19–25 {1.9–2.6, 14–18}”
A/C idler pulley locknut
NA 1994–1997 (BP); NB 1999–2000 (BP-4W); NA 1990–1993 (B6)
Factory manual28–38 ft·lb38–51 N·m38–51 N·m28–38 ft·lb
  • 1990 Mazda MX-5 Miata Workshop Manual — Page B–83Printed: “37—52 N·m (3.8—5.3 m-kg, 27—38 ft-lb)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–7Printed: “38–51 N·m (3.8–5.3 kgf·m, 28–38 ft·lbf)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–82Printed: “38–51 N·m (3.8–5.3 kgf·m, 28–38 ft·lbf)”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–10–2Printed: “38–51 {3.8–5.3, 28–38}”
A/C compressor bracket bolt, 19–25 N·m position
NA 1994–1997 (BP); NB 1999–2000 (BP-4W); NA 1990–1993 (B6)
Factory manual14–18 ft·lb19–25 N·m19–25 N·m14–18 ft·lb
  • 1990 Mazda MX-5 Miata Workshop Manual — Page B–83Printed: “A: 19—25 N·m (1.9—2.6 m-kg, 14—19 ft-lb)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–82Printed: “A: 19–25 N·m (1.9–2.6 kgf·m, 14–18 ft·lbf)”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–10–16Printed: “19–25 {1.9–2.6, 14–18}”
A/C compressor bracket bolt, 38–51 N·m position
NA 1994–1997 (BP); NB 1999–2000 (BP-4W); NA 1990–1993 (B6)
Factory manual28–38 ft·lb38–51 N·m38–51 N·m28–38 ft·lb
  • 1990 Mazda MX-5 Miata Workshop Manual — Page B–83Printed: “B: 37—52 N·m (3.8—5.3 m-kg, 27—38 ft-lb)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–82Printed: “B: 38–51 N·m (3.8–5.3 kgf·m, 28–38 ft·lbf)”
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–10–16Printed: “38–51 {3.8–5.3, 28–38}”
A/C compressor mounting bolts
NA 1994–1997 (BP); NA 1990–1993 (B6)
Factory manual11–15 ft·lb15–21 N·m15–21 N·m11–15 ft·lb
  • 1990 Mazda MX-5 Miata Workshop Manual — Page B–88Printed: “15—22 N·m (1.5—2.2 m-kg, 11—16 ft-lb)”
  • 1994 Mazda MX-5 Miata Workshop Manual — Page B–85Printed: “15–21 N·m (1.5–2.2 kgf·m, 11–15 ft·lbf)”
Power steering drive belt mounting bolt A (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
Factory manual28–38 ft·lb38–51 N·m38–51 N·m28–38 ft·lb
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 695Printed: “38—51 N·m {3.8—5.3 kgf·m, 28—38 ft·lbf}”
Power steering drive belt mounting bolt B (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
Factory manual27–39 ft·lb37–53 N·m37–53 N·m27–39 ft·lb
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 695Printed: “37—53 N·m {3.7—5.5 kgf·m, 27—39 ft·lbf}”
Power steering drive belt locknut C (NB2)
NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)
Factory manual14–18 ft·lb19–25 N·m19–25 N·m14–18 ft·lb
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture) — Page PDF p. 695Printed: “19—25 N·m {1.9—2.6 kgf·m, 14—18 ft·lbf}”

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