Engine/Gearbox/Diff drain plug sizes & torques -- NA (MK1) NB (MK2) NC (MK3)

   NA (MK1) NB (MK2) NC (MK3)
5 Speed 6 Speed 5 Speed 6 Speed
ENGINE Sump Plug Size 19mm 17mm
Sump Washer Part Number (Mazda) 9956-41-800 9956-41-400
Sump Plug Tightening Torque 29-41Nm [22-30ft/lb] 30-41Nm [22-30ft/lb]
GEARBOX Filler Plug Size 14mm Open Ended or 16mm Double Hex 24mm As NA (MK1) 24mm
Drain Plug Size 24mm
Plug Washer Part Number (Mazda) 9956-41-800 (2 Required for 6 Speed, 1 for drain & 1 for filler)
Filler Plug Tightening Torque 25-39Nm [18-29ft-lb] 27-48Nm [20-35ft-lb] As NA (MK1) 40-59Nm [30-43ft-lb]
Drain Plug Tightening Torque 39-59Nm [29-43ft-lb] As  NA (MK1)
DIFFERENTIAL Filler Plug Size 23mm
Drain Plug Size 24mm
Tightening Torque [Filler & Drain] 39-54Nm [29-40ft/lb]
Plug Washer Part Number (Mazda) 9956-41-800 (2 required, 1 for drain & 1 for filler)
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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