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1971 Mercury Montego

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Autolite AR25 Spark Plug
for 1971 Mercury Montego 5.8L V8 Gas OHV

Autolite AR25 Spark Plug - 1971 Mercury Montego
Autolite AR25 Spark Plug - 1971 Mercury Montego Image 1
Autolite AR25 Spark Plug - 1971 Mercury Montego

Autolite
Brand:Autolite
Part Number: AR25
UPC: 009100026569
Weight: 0.11 lbs
Condition:New



On Sale:

$7.17

Availability:
4 in Stock
Warehouse: US-7
Quantity:

Product Information

Description:

Get the Autolite AR25 Spark Plug for your 1971 Mercury Montego. Buy now and secure your purchase online!

Autolite Racing spark plugs are engineered with a cut-back ground electrode, anti-corrosive nickel plating, and large ground electrode that deliver better heat transfer, ensuring maximum engine performance on the track.

Features and Benefits:

  • Designed with an anti-corrosive nickel-plating prevents rusting better than black oxide, allowing the plug to maintain its durability and efficiency.
  • Engineered with a cut-back ground electrode that delivers optimal ignitability of the flame kernel and better heat transfer, leading to quicker starts.
  • Its high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength while preventing flash-over.
  • The yttrium-enhanced alloy enables up to 8% reduction in ground wire temperature for colder heat ranges designed to enable performance modifications and handle intense conditions.

Specifications:

Center Electrode Core Material:
Copper
Center Electrode Insulator Tip Projection:
0.133 in.
Center Electrode Insulator Tip Projection:
3.38 mm
Center Electrode Projection:
Mid Projection
Center Electrode Tip Material:
Nickel
Core Nose Length:
0.726 in.
Core Nose Length:
18.44 mm
Electrical Terminal Type:
Non-Removable Nut
Grade Type:
Performance
Ground Electrode Quantity:
1
Ground Electrode Tip Design:
Standard
Ground Electrode Tip Material:
Nickel
Hex Size:
5/8 in.
Hex Type:
Hex
Indexed:
No
Insulator Height:
2.374 in.
Insulator Height:
60.3 mm
Insulator Material:
Ceramic
Manufacturer Heat Range:
8
Pre-Gap Size:
0.044 in.
Pre-Gap Size:
1.12 mm
Reach:
0.431 in.
Reach:
10.95 mm
Resistance:
4000 Ohm
Resistor Type:
Yes
Seat Type:
Tapered
Thread Diameter:
14 mm
Washer Included:
No
Accel #:
276
Champion Spark Plug #:
18
Champion Spark Plug #:
276
Champion Spark Plug #:
C57Y
Champion Spark Plug #:
RV15YC4
NGK #:
6630
NGK #:
UR4
Country of Origin:
MX

Manufacturer Warranty:

4 Years

Autolite AR25 Spark Plug compatibility with your 1971 Mercury Montego...

Last Updated: 10/05/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes

1974

 

1973

 

1972

 

1971

 

1970

 

1969

 

1974

 

1973

 

1972

 

1971

 

1970

 

1969

 
Mercury Montego

5.8L V8 Gas OHV
1
 
High Performance Racing Resistor
14 (mm) Thread Size
Eng Ver: Cleveland
 

Mercury Montego



5.8L V8 Gas OHV High Performance Racing Resistor
14 (mm) Thread Size
Eng Ver: Cleveland

1 Per Vehicle

1974

 

1973

 

1972

 

1971

 

1970

 

1969

 

1974

 

1973

 

1972

 

1971

 

1970

 

1969

 
Mercury Montego

5.8L V8 Gas OHV
1
 
High Performance Racing Resistor
Gap .035 (in)
Eng Ver: Cleveland
 

Mercury Montego



5.8L V8 Gas OHV High Performance Racing Resistor
Gap .035 (in)
Eng Ver: Cleveland

1 Per Vehicle

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