1991 Ford Mustang Spark Plug Parts

Choose your Submodel for your 1991 Ford Mustang


Showing 1 - 10 of 25 products
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Champion
  • Champion Copper Plus- Boxed - RS12YC
  • 2 Plugs Per Cylinder Required Gap 0.044in OE Type ; Plug Type RS12YC
  • Champion Copper Plus 401 Spark Plug (Carton of 6)
  • Copper Plus
  • Product Attributes:
    • Hex Size:
      • 0.625
      • 15.880
    • Reach: 0.689
    • Center Electrode Tip Material: Nickel
    • Seat Type: Tapered
    • Electrical Terminal Type: Removable Nut
    • Pre-Gap Size:
      • 0.040
      • 1.02
    • Classification: Champion Copper Plus
    • Ground Electrode Core Material: Nickel
    • Insulator Height: 0.06
    • Resistor Type: Yes
    • Plug Type: Rs12yc
  • Dependable performance. This Champion® spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
  • Suggested Purchase Quantity: 10
    • Most jobs typically require 10 of this item.
  • This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:
3851857, 3854399, 3856759, 4318134, 7970, 7978, 7979, AGRF32, AGRF42, AGSF32C, AWRF42, AWSF32, AWSF32C, AWSF42, AWSF42C, AWSF52, AWSF52C, AWSFA32C...VIEW MORE

Additional Fitment Information:
Vehicle Block CC Engine CID
1991 - Ford Mustang L - 4 Cyl 2.3L 140

NGK
  • NGK G-Power Platinum Spark Plug
  • Dual Plug; 8 Req'd Gap 0.044"
  • G-Power Spark Plug
  • Product Attributes:
    • Seat Type: Tapered
    • Electrical Terminal Type: Non-removable Nut
    • Center Electrode Core Material: Copper
    • Part Number: Tr5gp
    • Hex Size: 5/8
    • Reach: .708
    • Center Electrode Tip Material: Platinum
    • Stock Number: 3186
    • Ground Electrode Tip Design: Trapezoid
    • Manufacturer Heat Range: 5
    • Ground Configuration: Standard
    • Pre-Gap Size: .040
    • Resistance: 5000
    • Insulator Height: 53.00
    • Ground Electrode Core Material: Nickel
  • NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. With over 80 years of automotive expertise NGK has built a reputation for quality and reliability; manufacturing spark plugs for virtually every automotive, motorcycle, marine and small engine application. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. With state-of-the-art manufacturing, inventory and distribution facilities in North America and across the globe, NGK is dedicated to providing customers with world-class products and services.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
  • This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:
19145290, 19250962, 19250963, 19250967, 25164641, 25164644, 3, 3013, 3013-2, 3026, 3186, 4005, 4205, 4309, 4457, 4511, 4713, 6...VIEW MORE

Additional Fitment Information:
Vehicle Block CC Engine CID
1991 - Ford Mustang L - 4 Cyl 2.3L 140

NGK
  • NGK V-Power Spark Plug
  • Dual Plug; 8 Req'd Gap 0.044" OE Equivalent Design 30,000 mi OE Mfr Recommended Service Interval
  • V-Power Spark Plug
  • Product Attributes:
    • Seat Type: Tapered
    • Electrical Terminal Type: Removable Nut
    • Center Electrode Core Material: Copper
    • Part Number: Tr5
    • Hex Size: 5/8
    • Reach: .708
    • Center Electrode Tip Material: Nickel
    • Stock Number: 2238
    • Ground Electrode Tip Design: Standard
    • Manufacturer Heat Range: 5
    • Ground Configuration: Standard
    • Pre-Gap Size: .040
    • Resistance: 5000
    • Insulator Height: 53.00
    • Ground Electrode Core Material: Nickel
  • NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. With over 80 years of automotive expertise NGK has built a reputation for quality and reliability; manufacturing spark plugs for virtually every automotive, motorcycle, marine and small engine application. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. With state-of-the-art manufacturing, inventory and distribution facilities in North America and across the globe, NGK is dedicated to providing customers with world-class products and services.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
  • This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:
104, 104BP, 104DP2, 105, 106, 106BP, 1765180, 1835078T, 20, 2238, 241229617, 2R44LTS, 3243, 3244, 3245, 3246, 3565, 3724...VIEW MORE

Additional Fitment Information:
Vehicle Block CC Engine CID
1991 - Ford Mustang L - 4 Cyl 2.3L 140

NGK
  • NGK Iridium IX Spark Plug
  • Dual Plug; 8 Req'd Gap 0.044"
  • Iridium IX Spark Plug
  • Product Attributes:
    • Seat Type: Tapered
    • Electrical Terminal Type: Non-removable Nut
    • Center Electrode Core Material: Copper
    • Part Number: Tr5ix
    • Hex Size: 5/8
    • Reach: .708
    • Center Electrode Tip Material: Iridium
    • Stock Number: 7397
    • Ground Electrode Tip Design: Taper Cut
    • Manufacturer Heat Range: 5
    • Ground Configuration: Standard
    • Pre-Gap Size: .040
    • Resistance: 5000
    • Insulator Height: 53.00
    • Ground Electrode Core Material: Nickel
  • NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. With over 80 years of automotive expertise NGK has built a reputation for quality and reliability; manufacturing spark plugs for virtually every automotive, motorcycle, marine and small engine application. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. With state-of-the-art manufacturing, inventory and distribution facilities in North America and across the globe, NGK is dedicated to providing customers with world-class products and services.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
  • This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:
12571533, 1765290, 1835350T, 1835384T, 1835422T, 241-904, 241-906, 241-910, 25164640, 3, 4011, 41-900, 41-904, 41-906, 41-907, 41-910, 41-986, 4205...VIEW MORE

Additional Fitment Information:
Vehicle Block CC Engine CID
1991 - Ford Mustang L - 4 Cyl 2.3L 140

Autolite
  • Autolite 25 Copper Resistor Spark Plug
  • OE Style; .054"/1.4mm
  • Copper Resistor Spark Plug
  • Product Attributes:
    • Center Electrode Design: Standard / Regular
    • Seat Type: Tapered
    • Electrical Terminal Type: Stud
    • Ground Electrode Tip Material: Nickel
    • Center Electrode Core Material: Copper
    • Resistor Type: Yes
    • Insulator Material: Ceramic
    • Hex Size: 5/8"
    • Reach:
      • 0.431
      • 11.0
    • Center Electrode Tip Material: Nickel
    • Ground Electrode Tip Design: Tapered
    • Insulator Type: Mid Projection
    • Pre-Gap Size:
      • 0.044
      • 1.10
    • Resistance: 4000
    • Ground Electrode Core Material: Nickel
  • Autolite® Copper Spark Plugs are manufactured to deliver quick starts, improved fuel economy and smooth acceleration. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and Original Equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
  • This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:
18, 2423, 44TS, 5024, 5613673, 80034, AF42

Additional Fitment Information:
Vehicle Block CC Engine CID
1991 - Ford Mustang V - 8 Cyl 5.0L 302

Autolite
  • Autolite APP104 Double Platinum Spark Plug
  • Replaces OE Half Thread Design Requires 2 Plugs Per Cylinder .044"/1.1mm
  • Double Platinum Spark Plug
  • Product Attributes:
    • Center Electrode Design: Standard / Regular
    • Seat Type: Tapered
    • Electrical Terminal Type: Stud
    • Ground Electrode Tip Material: Platinum
    • Center Electrode Core Material: Platinum
    • Resistor Type: Yes
    • Insulator Material: Ceramic
    • Hex Size: 5/8"
    • Reach:
      • 0.679
      • 17.0
    • Center Electrode Tip Material: Platinum
    • Ground Electrode Tip Design: Tapered
    • Insulator Type: Mid Projection
    • Pre-Gap Size:
      • 0.050
      • 1.30
    • Resistance: 5000
    • Ground Electrode Core Material: Nickel
  • Autolite® Double Platinum Spark Plugs are a premium plug providing superior performance and platinum-to-platinum firing for a longer lasting spark plug. Autolite® Double Platinum Spark Plugs are engineered to provide easier starts, quicker acceleration and improved fuel efficiency. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
  • This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:
0 241 235 732, 12787099, 41-810, 432PPM, 6644, 7401

Additional Fitment Information:
Vehicle Block CC Engine CID
1991 - Ford Mustang L - 4 Cyl 2.3L 140

Autolite
  • Autolite AP25 Platinum Spark Plug
  • .054"/1.4mm
  • Platinum Spark Plug
  • Product Attributes:
    • Center Electrode Design: Standard / Regular
    • Seat Type: Tapered
    • Electrical Terminal Type: Stud
    • Ground Electrode Tip Material: Nickel
    • Center Electrode Core Material: Platinum
    • Resistor Type: Yes
    • Insulator Material: Ceramic
    • Hex Size: 5/8"
    • Reach:
      • 0.433
      • 11.0
    • Center Electrode Tip Material: Platinum
    • Ground Electrode Tip Design: Tapered
    • Insulator Type: Mid Projection
    • Pre-Gap Size:
      • 0.044
      • 1.10
    • Resistance: 4000
    • Ground Electrode Core Material: Nickel
  • Autolite® Platinum Spark Plugs are manufactured to deliver greater durability compared to standard copper plugs. Autolite® Platinum Spark Plugs provide easier starts, quicker acceleration, and improved fuel economy. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
  • This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:
2, 2423, 406, 4AF2, 5024, 6113

Additional Fitment Information:
Vehicle Block CC Engine CID
1991 - Ford Mustang V - 8 Cyl 5.0L 302

NGK
  • NGK V-Power Spark Plug
  • Gap 0.054" OE Equivalent Design 30,000 mi OE Mfr Recommended Service Interval
  • V-Power Spark Plug
  • Product Attributes:
    • Seat Type: Tapered
    • Electrical Terminal Type: Non-removable Nut
    • Center Electrode Core Material: Copper
    • Part Number: Ur45
    • Hex Size: 5/8
    • Reach: .46
    • Center Electrode Tip Material: Nickel
    • Stock Number: 6945
    • Ground Electrode Tip Design: Standard
    • Manufacturer Heat Range: 4
    • Ground Configuration: Standard
    • Pre-Gap Size: .060
    • Resistance: 5000
    • Insulator Height: 55.00
    • Ground Electrode Core Material: Nickel
  • NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. With over 80 years of automotive expertise NGK has built a reputation for quality and reliability; manufacturing spark plugs for virtually every automotive, motorcycle, marine and small engine application. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. With state-of-the-art manufacturing, inventory and distribution facilities in North America and across the globe, NGK is dedicated to providing customers with world-class products and services.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
  • This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:
17, 1765132, 17C2, 1835796T, 1835818T, 1835914T, 19C2, 25, 26, 26BP, 26DP2, 27, 2R45TS8, 2R45TSX, 3036, 3604, 3605, 3606...VIEW MORE

Additional Fitment Information:
Vehicle Block CC Engine CID
1991 - Ford Mustang V - 8 Cyl 5.0L 302

Autolite
  • Autolite 104 Copper Resistor Spark Plug
  • OE Style; Replaces OE Half Thread Design Requires 2 Plugs Per Cylinder .044"/1.1mm
  • Copper Resistor Spark Plug
  • Product Attributes:
    • Center Electrode Design: Standard / Regular
    • Seat Type: Tapered
    • Electrical Terminal Type: Stud
    • Ground Electrode Tip Material: Copper
    • Center Electrode Core Material: Copper
    • Resistor Type: Yes
    • Insulator Material: Ceramic
    • Hex Size: 5/8"
    • Reach:
      • 0.679
      • 17.0
    • Center Electrode Tip Material: Copper
    • Ground Electrode Tip Design: Tapered
    • Insulator Type: Mid Projection
    • Pre-Gap Size:
      • 0.050
      • 1.30
    • Resistance: 5000
    • Ground Electrode Core Material: Nickel
  • Autolite® Copper Spark Plugs are manufactured to deliver quick starts, improved fuel economy and smooth acceleration. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and Original Equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.
  • This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:
1006, 41-937, 4122, 45, 5022, 5612006, D7A

Additional Fitment Information:
Vehicle Block CC Engine CID
1991 - Ford Mustang L - 4 Cyl 2.3L 140

Accel
  • Stock Heat Range; 0.032 in. Gap; 5/8 in. Hex Size; .460 in. Reach; Resistor; Tapered Seat Type; 1.25mm Thread Pitch; 14mm Thread Size; 8 Pack Of PN[0576];0.050 in. Plug Gap
  • HP Copper Spark Plug; Stock Heat Range; 0.032 in. Gap; 5/8 in. Hex Size; .460 in. Reach; Resistor; Tapered Seat Type; 1.25mm Thread Pitch; 14mm Thread Size; 8 Pack Of PN[0576];
  • HP Copper Spark Plug
  • Product Attributes:
    • Hex Size: 0.625 In.
    • Reach: 0.460 In.
    • Thread Size: 14mm
    • Resistor: Yes
    • Torque Capacity: 7.2 Ft/lbs. - 14.5 Ft/lbs.
    • WARNING CA Proposition 65: No
    • Assembly Method: Tapered
    • Projected Tip: Yes
    • Gap Size: 0.032 In.
    • Package Quantity: 8
  • Features:
    • Copper Core Is A Better Conductor Than Iridium Or Platinum Plugs
    • Copper Dissipates Heat Much Better Than Other Materials
    • C-Cut Design/Un-Shrouding The Spark Kernel
    • Gapable Unlike Iridium Or Platinum
    • Machine Rolled Threads-Precise Thread Engagement
    • Stock Heat Range
    • On The Street Or Strip
    • Accel Hp Copper Core Spark Plugs Deliver!
  • ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL HP Spark Plugs are gapable allowing you to open the gap exposing a larger flame kernel or close it if needed for high boost applications. All ACCEL HP Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.

Additional Fitment Information:
Vehicle Block CC Engine CID
1991 - Ford Mustang V - 8 Cyl 5.0L 302
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