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AUTOLITE 25 spark plugs

25 AUTOLITE – Properties, Compatibility and Alternatives

The AUTOLITE 25 spark plugs represent a reliable ignition solution designed for optimal engine performance in various automotive applications. These Spark plug AUTOLITE 25 deliver consistent spark generation and are engineered to meet the demanding requirements of modern internal combustion engines. The robust construction and proven design make them suitable for both regular maintenance and performance-oriented applications.

Advantages of the 25 AUTOLITE

  • Enhanced ignition reliability ensures consistent engine starts and smooth operation across various operating conditions
  • Durable copper core construction provides excellent heat dissipation and extends service life significantly
  • Optimized electrode design of these Spark plug 25 AUTOLITE promotes complete fuel combustion and reduces emissions
  • Superior corrosion resistance protects against harsh environmental conditions and extends replacement intervals
  • Precise manufacturing tolerances ensure proper fitment and reliable performance in compatible engines
  • Cost-effective maintenance solution that delivers dependable AUTOLITE 25 spark plug performance without compromising quality

Technical Data

Feature Value
Manufacturer Autolite
Model AUTOLITE 25
Type Copper core, standard electrode
Thread size 14mm x 1.25
Thread length 19mm (3/4 inch)
Wrench size 13/16 inch (20.6mm)
Heat range 5 (medium heat range)
Electrode gap 0.025 inch (0.635mm)
Resistance Non-resistor type
Application Classic American vehicles, vintage engines

Compatibility and Areas of Application

These spark plugs are specifically designed for classic American automotive applications where non-resistor plugs are required. The 25 AUTOLITE spark plug are particularly well-suited for vintage engines that were originally equipped with similar specifications. The medium heat range makes them versatile for various driving conditions, from city commuting to highway cruising.

  • Classic American muscle cars and vintage vehicles from the 1960s-1980s
  • Small block and big block V8 engines requiring non-resistor spark plugs
  • Restoration projects where original equipment specifications must be maintained
  • Performance applications in older engines with points-based ignition systems

Suitable for the following vehicle models and equivalents

It is important to mention that alternative products can be found on AUTODOC. Currently, there are over 7000 items available in the spark plugs category.

Car maker Car Model
Chevrolet Camaro, Chevelle, Nova (1967-1980)
Ford Mustang, Torino (1965-1978)
Plymouth Barracuda, Road Runner (1968-1975)
Dodge Charger, Challenger (1970-1978)

Application Notes and Important Questions

  • When should 25 AUTOLITE be replaced? Generally every 10,000-15,000 miles for copper core plugs, or when experiencing misfiring, rough idle, or starting difficulties.
  • Are these Spark plug AUTOLITE 25 compatible with electronic ignition systems? Yes, but verify your engine's specific requirements as some electronic systems may require resistor-type plugs.
  • What torque specification should be used during installation? Typically 25-30 ft-lbs for 14mm threads, but always consult your vehicle's service manual for exact specifications.
  • Can these plugs be regapped if necessary? Yes, the electrode gap can be carefully adjusted using proper gapping tools, but avoid excessive bending of electrodes.

Conclusion

The AUTOLITE 25 spark plugs provide reliable ignition performance for classic American vehicles requiring non-resistor spark plugs. Their proven copper core design and precise manufacturing ensure dependable operation in vintage engines. These AUTOLITE 25 spark plugs represent an excellent choice for maintaining authentic performance in classic automotive applications.

51 items
AUTOLITE XP5683 Spark plug Spanner Size: 14
Article number: XP5683
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 1,1
  • Spanner Size: 14
  • External Thread [mm]: 12
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 3,80
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 15
  • Tightening torque to [Nm]: 25
  • Item number: XP5683
  • Manufacturer: AUTOLITE
  • EAN number: 9100267191
  • Condition: New
Details
In stock
£ 12,41
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AUTOLITE APP5263 Spark plug Spanner Size: 16 mm
Article number: APP5263
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with taper seat
  • Electrode Gap [mm]: 1
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 25
  • Spark Position [mm]: 3,40
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,06
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 10
  • Tightening torque to [Nm]: 20
  • Item number: APP5263
  • Manufacturer: AUTOLITE
  • EAN number: 9100040695
  • Condition: New
Details
In stock
£ 16,44
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AUTOLITE XP5364 Spark plug Spanner Size: 16 mm
Article number: XP5364
Reviews - 1
  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with taper seat
  • Electrode Gap [mm]: 1,4
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 25
  • Spark Position [mm]: 3,40
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE 4
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 10
  • Tightening torque to [Nm]: 20
  • Item number: XP5364
  • Manufacturer: AUTOLITE
  • EAN number: 9100044525
  • Condition: New
Details
In stock
£ 16,87
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AUTOLITE 4123 Spark plug Spanner Size: 21
Article number: 4123
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 0,7
  • Spanner Size: 21
  • External Thread [mm]: 14
  • Thread Length [mm]: 12,7
  • Spark Position [mm]: 3,30
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE / M4
  • Weight [kg]: 0,06
  • Resistor [kOhm]: 8
  • Tightening torque from [Nm]: 20
  • Tightening torque to [Nm]: 30
  • Item number: 4123
  • Manufacturer: AUTOLITE
  • EAN number: 9100254948
  • Condition: New
Details
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£ 4,35
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AUTOLITE 5325 Spark plug Spanner Size: 16 mm
Article number: 5325
Reviews - 1
  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 1,1
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 3,30
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,06
  • Resistor [kOhm]: 8
  • Tightening torque from [Nm]: 20
  • Tightening torque to [Nm]: 30
  • Item number: 5325
  • Manufacturer: AUTOLITE
  • EAN number: 9100268075
  • Condition: New
Details
In stock (Item(s) left: 8)
£ 5,38
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AUTOLITE 63 Spark plug Spanner Size: 21
Article number: 63
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 0,9
  • Spanner Size: 21
  • External Thread [mm]: 14
  • Thread Length [mm]: 19
  • Spark Position [mm]: 3,40
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE / M4
  • Weight [kg]: 0,07
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 20
  • Tightening torque to [Nm]: 30
  • Item number: 63
  • Manufacturer: AUTOLITE
  • EAN number: 9100000637
  • Condition: New
Details
In stock (Item(s) left: 1)
£ 5,87
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AUTOLITE 64 Spark plug Spanner Size: 21
Article number: 64
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 1,1
  • Spanner Size: 21
  • External Thread [mm]: 14
  • Thread Length [mm]: 19
  • Spark Position [mm]: 3,40
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE / M4
  • Weight [kg]: 0,07
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 20
  • Tightening torque to [Nm]: 30
  • Item number: 64
  • Manufacturer: AUTOLITE
  • EAN number: 9100000644
  • Condition: New
Details
In stock
£ 6,40
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AUTOLITE 5903 Spark plug Spanner Size: 16 mm
Article number: 5903
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 1,1
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 22
  • Spark Position [mm]: 4
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,06
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 20
  • Tightening torque to [Nm]: 30
  • Item number: 5903
  • Manufacturer: AUTOLITE
  • EAN number: 9100270252
  • Condition: New
Details
In stock (Item(s) left: 4)
£ 7,35
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AUTOLITE APP3923 Spark plug Spanner Size: 16 mm
Article number: APP3923
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 1,1
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 19
  • Spark Position [mm]: 3,40
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 20
  • Tightening torque to [Nm]: 30
  • Item number: APP3923
  • Manufacturer: AUTOLITE
  • EAN number: 9100002365
  • Condition: New
Details
In stock (Item(s) left: 7)
£ 9,03
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AUTOLITE XP5224 Spark plug Spanner Size: 16 mm
Article number: XP5224
Reviews - 1
  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 1,1
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 19
  • Spark Position [mm]: 4,80
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 20
  • Tightening torque to [Nm]: 30
  • Item number: XP5224
  • Manufacturer: AUTOLITE
  • EAN number: 9100044426
  • Condition: New
Details
In stock
£ 9,36
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AUTOLITE AI5245 Spark plug Spanner Size: 16 mm
Article number: AI5245
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with taper seat
  • Electrode Gap [mm]: 1,1
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 17,2
  • Spark Position [mm]: 4,80
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 10
  • Tightening torque to [Nm]: 20
  • Item number: AI5245
  • Manufacturer: AUTOLITE
  • EAN number: 9100270733
  • Condition: New
Details
In stock
£ 13,70
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AUTOLITE XP6003 Spark plug Spanner Size: 16 mm
Article number: XP6003
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 1
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 6
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,06
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 20
  • Tightening torque to [Nm]: 30
  • Item number: XP6003
  • Manufacturer: AUTOLITE
  • EAN number: 9100267528
  • Condition: New
Details
In stock
£ 20,46
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AUTOLITE 5663 Spark plug Spanner Size: 16 mm
Article number: 5663
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 0,85
  • Spanner Size: 16 mm
  • External Thread [mm]: 12
  • Thread Length [mm]: 19
  • Spark Position [mm]: 2,90
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 8
  • Tightening torque from [Nm]: 15
  • Tightening torque to [Nm]: 25
  • Item number: 5663
  • Manufacturer: AUTOLITE
  • EAN number: 9100267931
  • Condition: New
Details
Сurrently out of stock
£ 3,90
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AUTOLITE 5682 Spark plug Spanner Size: 14
Article number: 5682
Reviews - 3
  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 0,76
  • Spanner Size: 14
  • External Thread [mm]: 12
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 3,80
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 15
  • Tightening torque to [Nm]: 25
  • Item number: 5682
  • Manufacturer: AUTOLITE
  • EAN number: 9100270023
  • Condition: New
Details
Сurrently out of stock
£ 4,64
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AUTOLITE XP5801 Spark plug Spanner Size: 14-B
Article number: XP5801
Reviews - 1
  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 0,8
  • Spanner Size: 14-B
  • External Thread [mm]: 12
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 4,80
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,06
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 15
  • Tightening torque to [Nm]: 25
  • Item number: XP5801
  • Manufacturer: AUTOLITE
  • EAN number: 9100270689
  • Condition: New
Details
Сurrently out of stock
£ 7,80
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AUTOLITE APP5363 Spark plug Spanner Size: 16 mm
Article number: APP5363
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  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with taper seat
  • Electrode Gap [mm]: 1
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 25
  • Spark Position [mm]: 3,40
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 10
  • Tightening torque to [Nm]: 20
  • Item number: APP5363
  • Manufacturer: AUTOLITE
  • EAN number: 9100268358
  • Condition: New
Details
Сurrently out of stock
£ 7,80
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AUTOLITE XP5684 Spark plug Spanner Size: 14
Article number: XP5684
Submit a review
  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 1,1
  • Spanner Size: 14
  • External Thread [mm]: 12
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 3,80
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 15
  • Tightening torque to [Nm]: 25
  • Item number: XP5684
  • Manufacturer: AUTOLITE
  • EAN number: 9100267276
  • Condition: New
Details
Сurrently out of stock
£ 7,80
Price per item

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AUTOLITE XP6083 Spark plug Spanner Size: 16 mm
Article number: XP6083
Submit a review
  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with taper seat
  • Electrode Gap [mm]: 0,8
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 25
  • Spark Position [mm]: 6,60
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 10
  • Tightening torque to [Nm]: 20
  • Item number: XP6083
  • Manufacturer: AUTOLITE
  • EAN number: 9100268747
  • Condition: New
Details
Сurrently out of stock
£ 8,35
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AUTOLITE AI5363 Spark plug Spanner Size: 16 mm
Article number: AI5363
Submit a review
  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with taper seat
  • Electrode Gap [mm]: 1,1
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 25
  • Spark Position [mm]: 3,40
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,06
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 10
  • Tightening torque to [Nm]: 20
  • Item number: AI5363
  • Manufacturer: AUTOLITE
  • EAN number: 9100270511
  • Condition: New
Details
Сurrently out of stock
£ 8,56
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AUTOLITE AI5863 Spark plug Spanner Size: 16 mm
Article number: AI5863
Submit a review
  • Spark Plug: Control electrode gap, Interference Suppression, 1 - Earthed Electrode, with taper seat
  • Electrode Gap [mm]: 0,8
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 25
  • Spark Position [mm]: 3,40
  • Thread Pitch [mm]: 1,25
  • Connector type: SAE
  • Weight [kg]: 0,05
  • Resistor [kOhm]: 5
  • Tightening torque from [Nm]: 10
  • Tightening torque to [Nm]: 20
  • Item number: AI5863
  • Manufacturer: AUTOLITE
  • EAN number: 9100270832
  • Condition: New
Details
Сurrently out of stock
£ 8,56
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