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Replacement Parts for Alfa Romeo Spark Plug
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Alfa Romeo Spark Plug

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Spark Plugs & Wires
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  • Denso Cold Type Iridium Long-Life Spark Plug for Alfa Romeo - 3403

    Denso® Cold Type Iridium Long-Life Spark Plug for Alfa Romeo

    PartNumber: 3403
    Product Specifications
    • Electrode Material: Iridium
    • Gap: .031" (0.8 mm)
    • Heat Range: 20
    • Hex Size: 5/8" (16 mm)
    • Nominal Gap: 0.8 mm
    • Overall Height: ISO
    • Reach: 19 mm (3/4")
    • Seat Type: Gasket
    • Terminal Type: Solid
    • Thread Diameter: 14 mm
    • Thread Pitch: 1.25 mm
    • UPC: 042511034037
    • Part Description: Alfa Romeo Cold Type Iridium Long-Life Spark Plug
    More Info
    $10.22
  • Denso Iridium TT™ Cold Type Spark Plug for Alfa Romeo - 4702

    Denso® Iridium TT™ Cold Type Spark Plug for Alfa Romeo

    PartNumber: 4702
    Product Specifications
    • Electrode Material: Iridium
    • Gap: .039" (1.0 mm)
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Platinum Twin -Tip
    • Heat Range: 20
    • Hex Size: 5/8" (16 mm)
    • Material: Nickel
    • Nominal Gap: 1 mm
    • Overall Height: ISO
    • Reach: 19 mm (3/4")
    • Resistance: 5000 Ohms
    • Seat Type: Gasket
    • Spark Plug Reach: 19 mm
    • Terminal Type: Solid
    • Thread Diameter: 14 mm
    • Thread Pitch: 1.25 mm
    • UPC: 042511047020
    • Wrench Diameter: 16 mm
    • Part Description: Alfa Romeo Iridium TT™ Cold Type Spark Plug
    More Info
    $6.67
  • Denso Iridium TT™ Spark Plug for Alfa Romeo - 4709

    Denso® Iridium TT™ Spark Plug for Alfa Romeo

    PartNumber: 4709
    Product Specifications
    • Electrode Material: Iridium
    • Gap: .039" (1.0 mm)
    • Heat Range: 20
    • Hex Size: 13/16" (21 mm)
    • Nominal Gap: 1 mm
    • Overall Height: JIS
    • Reach: 19 mm (3/4")
    • Seat Type: Gasket
    • Terminal Type: Solid
    • Thread Diameter: 14 mm
    • Thread Pitch: 1.25 mm
    • UPC: 042511047099
    • Part Description: Alfa Romeo Iridium TT™ Spark Plug
    More Info
    $7.03
  • Denso Iridium Power™ Spark Plug for Alfa Romeo - 5307

    Denso® Iridium Power™ Spark Plug for Alfa Romeo

    PartNumber: 5307
    Product Specifications
    • Electrode Material: Iridium
    • Gap: .031" (0.8 mm)
    • Heat Range: 22
    • Hex Size: 13/16" (21 mm)
    • Nominal Gap: 0.8 mm
    • Overall Height: JIS
    • Reach: 19 mm (3/4")
    • Seat Type: Gasket
    • Terminal Type: Removable Nut
    • Thread Diameter: 14 mm
    • Thread Pitch: 1.25 mm
    • UPC: 042511053076
    • Part Description: Alfa Romeo Iridium Power™ Spark Plug
    More Info
    $6.15
  • Denso Iridium Power™ Cold Type Spark Plug for Alfa Romeo - 5304

    Denso® Iridium Power™ Cold Type Spark Plug for Alfa Romeo

    PartNumber: 5304
    Product Specifications
    • Electrode Material: Iridium
    • Gap: .043" (1.1 mm)
    • Heat Range: 20
    • Hex Size: 5/8" (16 mm)
    • Nominal Gap: 1.1 mm
    • Overall Height: ISO
    • Reach: 19 mm (3/4")
    • Seat Type: Gasket
    • Terminal Type: Solid
    • Thread Diameter: 14 mm
    • Thread Pitch: 1.25 mm
    • UPC: 042511053045
    • Part Description: Alfa Romeo Iridium Power™ Cold Type Spark Plug
    More Info
    $6.02
  • Denso Iridium Power™ Spark Plug for Alfa Romeo - 5306

    Denso® Iridium Power™ Spark Plug for Alfa Romeo

    PartNumber: 5306
    Product Specifications
    • Electrode Material: Iridium
    • Gap: .043" (1.1 mm)
    • Heat Range: 20
    • Hex Size: 13/16" (21 mm)
    • Nominal Gap: 1.1 mm
    • Overall Height: JIS
    • Reach: 19 mm (3/4")
    • Seat Type: Gasket
    • Terminal Type: Removable Nut
    • Thread Diameter: 14 mm
    • Thread Pitch: 1.25 mm
    • UPC: 042511053069
    • Part Description: Alfa Romeo Iridium Power™ Spark Plug
    More Info
    $6.31
  • Denso Platinum TT™ Spark Plug for Alfa Romeo - 4502

    Denso® Platinum TT™ Spark Plug for Alfa Romeo

    PartNumber: 4502
    Product Specifications
    • Electrode Material: Platinum
    • Gap: .039" (1.0 mm)
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Titanium Enhanced Twin-Tip
    • Heat Range: 20
    • Hex Size: 13/16" (21 mm)
    • Material: Nickel
    • Nominal Gap: 1 mm
    • Overall Height: JIS
    • Reach: 19 mm (3/4")
    • Seat Type: Gasket
    • Spark Plug Reach: 19 mm
    • Terminal Type: Solid
    • Thread Diameter: 14 mm
    • Thread Pitch: 1.25 mm
    • UPC: 042511045026
    • Wrench Diameter: 16 mm
    • Part Description: Alfa Romeo Platinum TT™ Spark Plug
    More Info
    $3.26
  • Denso Platinum TT™ Spark Plug for Alfa Romeo - 4504

    Denso® Platinum TT™ Spark Plug for Alfa Romeo

    PartNumber: 4504
    Product Specifications
    • Electrode Material: Platinum
    • Gap: .039" (1.0 mm)
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Titanium Enhanced Twin-Tip
    • Heat Range: 20
    • Hex Size: 5/8" (16 mm)
    • Material: Nickel
    • Nominal Gap: 1 mm
    • Overall Height: ISO
    • Quantity: 1 Piece
    • Seat Type: Gasket
    • Spark Plug Reach: 19 mm
    • Terminal Type: Solid
    • Thread Diameter: 14 mm
    • Thread Pitch: 1.25 mm
    • UPC: 042511045040
    • Wrench Diameter: 16 mm
    • Part Description: Alfa Romeo Platinum TT™ Spark Plug
    More Info
    $3.38
  • Denso Original U-Groove Nickel Spark Plug for Alfa Romeo - 3057

    Denso® Original U-Groove Nickel Spark Plug for Alfa Romeo

    PartNumber: 3057
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Material: Nickel
    • Gap: 0.032"
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: U-Groove
    • Heat Range: 20
    • Hex Size: 4/5"
    • Resistance: 5 kOhm
    • Spark Plug Seat Style: Gasket
    • Thread Diameter: 0.551"
    • Thread Reach: 0.748"
    • UPC: 042511030572
    • Part Description: Alfa Romeo Original U-Groove Nickel Spark Plug
    More Info
    $2.00
  • Denso Original U-Groove Nickel Spark Plug for Alfa Romeo - 3066

    Denso® Original U-Groove Nickel Spark Plug for Alfa Romeo

    PartNumber: 3066
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Material: Nickel
    • Gap: 0.032"
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: U-Groove
    • Heat Range: 20
    • Hex Size: 4/5"
    • Resistance: 5 kOhm
    • Spark Plug Seat Style: Gasket
    • Thread Diameter: 0.551"
    • Thread Reach: 0.748"
    • UPC: 042511030664
    • Part Description: Alfa Romeo Original U-Groove Nickel Spark Plug
    More Info
    $1.85
  • Denso Original U-Groove Nickel Spark Plug for Alfa Romeo - 3098

    Denso® Original U-Groove Nickel Spark Plug for Alfa Romeo

    PartNumber: 3098
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Material: Nickel
    • Gap: 0.032"
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: U-Groove
    • Heat Range: 22
    • Hex Size: 4/5"
    • Resistance: 5 kOhm
    • Spark Plug Seat Style: Gasket
    • Thread Diameter: 0.551"
    • Thread Reach: 0.748"
    • Part Description: Alfa Romeo Original U-Groove Nickel Spark Plug
    More Info
    $1.84
  • Denso Original U-Groove Nickel Spark Plug for Alfa Romeo - 3122

    Denso® Original U-Groove Nickel Spark Plug for Alfa Romeo

    PartNumber: 3122
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Material: Nickel
    • Gap: 0.032"
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: U-Groove
    • Heat Range: 20
    • Hex Size: 16 mm
    • Resistance: 5 kOhm
    • Spark Plug Seat Style: Gasket
    • Thread Diameter: 0.551"
    • Thread Reach: 0.748"
    • UPC: 042511031227
    • Part Description: Alfa Romeo Original U-Groove Nickel Spark Plug
    More Info
    $1.99
  • Denso Double Platinum Spark Plug for Alfa Romeo - 3127

    Denso® Double Platinum Spark Plug for Alfa Romeo

    PartNumber: 3127
    Product Specifications
    • Electrode Material: Platinum
    • Gap: .031" (0.8 mm)
    • Heat Range: 20
    • Hex Size: 5/8" (16 mm)
    • Nominal Gap: 0.8 mm
    • Overall Height: ISO
    • Reach: 19 mm (3/4")
    • Seat Type: Gasket
    • Spark Plug Reach: 0.748"
    • Terminal Type: Solid
    • Thread Diameter: 14 mm
    • Thread Pitch: 1.25 mm
    • UPC: 042511031272
    • Part Description: Alfa Romeo Double Platinum Spark Plug
    More Info
    $6.12
  • Denso Double Platinum Spark Plug for Alfa Romeo - 3229

    Denso® Double Platinum Spark Plug for Alfa Romeo

    PartNumber: 3229
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Design: Fine Wire
    • Center Electrode Tip Material: 1.1mm Platinum; Platinum
    • Drive Size: 13/16 in
    • Gap - Factory Preset: 0.8 mm = 0.032 in
    • Ground Configuration: Standard
    • Ground Electrode Configuration: Single
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Platinum Chip
    • Ground Electrode Tip Material: Platinum
    • Hex Size: 20.6
    • Insulator Material: Ceramic
    • Insulator Type: Non-Projected
    • Internet Product Code (IPC): 8C6566BAE1E
    • Item has MSDS (SDS): N
    • Manufacturer Heat Range: 20
    • Manufacturer Heat Range Number: 20
    • MFG Brand Name: DENSO Auto Parts
    • MFG Model # (Series): 3229
    • MFG Name: DENSO
    • Pre-Gap Size: 0.032
    • Reach: 19.00
    • Resistance: 5000
    • Resistor: Yes
    • Seat Style: Gasket
    • Seat Type: Flat
    • Short Style: No
    • Supplier Company Name: DENSO
    • Thread Diameter: 0.551
    • Thread Size: 14mm
    • UPC: 042511032293
    • Part Description: Alfa Romeo Double Platinum Spark Plug
    More Info
  • Denso Iridium Tt™ Spark Plug for Alfa Romeo - IK20

    Denso® Iridium Tt™ Spark Plug for Alfa Romeo

    PartNumber: IK20
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Iridium Rhodium Alloy
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Tapercut, U-Groove
    • Hex Size: 16.0
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.044
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511053045
    • Part Description: Alfa Romeo Iridium Tt™ Spark Plug
    More Info
  • Denso Iridium Tt™ Spark Plug for Alfa Romeo - IK20TT

    Denso® Iridium Tt™ Spark Plug for Alfa Romeo

    PartNumber: IK20TT
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Iridium Rhodium Alloy
    • Ground Configuration: Twin-Tip
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Platinum Twin-Tip
    • Hex Size: 16.0
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.040
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511047020
    • Part Description: Alfa Romeo Iridium Tt™ Spark Plug
    More Info
  • Denso Iridium Tt™ Spark Plug for Alfa Romeo - IW20

    Denso® Iridium Tt™ Spark Plug for Alfa Romeo

    PartNumber: IW20
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Iridium Rhodium Alloy
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Tapercut, U-Groove
    • Hex Size: 20.6
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.044
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511053069
    • Part Description: Alfa Romeo Iridium Tt™ Spark Plug
    More Info
  • Denso Iridium Tt™ Spark Plug for Alfa Romeo - IW20TT

    Denso® Iridium Tt™ Spark Plug for Alfa Romeo

    PartNumber: IW20TT
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Iridium Rhodium Alloy
    • Ground Configuration: Twin-Tip
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Platinum Twin-Tip
    • Hex Size: 20.6
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.040
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511047099
    • Part Description: Alfa Romeo Iridium Tt™ Spark Plug
    More Info
  • Denso Iridium Tt™ Spark Plug for Alfa Romeo - IW22

    Denso® Iridium Tt™ Spark Plug for Alfa Romeo

    PartNumber: IW22
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Iridium Rhodium Alloy
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Tapercut, U-Groove
    • Hex Size: 20.6
    • Manufacturer Heat Range: 22
    • Pre-Gap Size: 0.032
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511053076
    • Part Description: Alfa Romeo Iridium Tt™ Spark Plug
    More Info
  • Denso Original U-Groove™ Spark Plug for Alfa Romeo - K20R-U

    Denso® Original U-Groove™ Spark Plug for Alfa Romeo

    PartNumber: K20R-U
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Nickel
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: U-Groove
    • Hex Size: 16.0
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.032
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511031227
    • Part Description: Alfa Romeo Original U-Groove™ Spark Plug
    More Info
  • Denso Double Platinum™ Spark Plug for Alfa Romeo - P20R8

    Denso® Double Platinum™ Spark Plug for Alfa Romeo

    PartNumber: P20R8
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Platinum
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Platinum Chip
    • Hex Size: 20.6
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.032
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511032293
    • Part Description: Alfa Romeo Double Platinum™ Spark Plug
    More Info
  • Denso Double Platinum™ Spark Plug for Alfa Romeo - PK20R8

    Denso® Double Platinum™ Spark Plug for Alfa Romeo

    PartNumber: PK20R8
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Platinum
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Platinum Chip
    • Hex Size: 16.0
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.032
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511031272
    • Part Description: Alfa Romeo Double Platinum™ Spark Plug
    More Info
  • Denso Platinum Tt™ Spark Plug for Alfa Romeo - PK20TT

    Denso® Platinum Tt™ Spark Plug for Alfa Romeo

    PartNumber: PK20TT
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Platinum
    • Ground Configuration: Twin-Tip
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Titanium Enhanced Twin-Tip
    • Hex Size: 16.0
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.040
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511045040
    • Part Description: Alfa Romeo Platinum Tt™ Spark Plug
    More Info
  • Denso Platinum Tt™ Spark Plug for Alfa Romeo - PW20TT

    Denso® Platinum Tt™ Spark Plug for Alfa Romeo

    PartNumber: PW20TT
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Platinum
    • Ground Configuration: Twin-Tip
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Titanium Enhanced Twin-Tip
    • Hex Size: 20.6
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.040
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511045026
    • Part Description: Alfa Romeo Platinum Tt™ Spark Plug
    More Info
  • Denso Iridium Long-Life™ Spark Plug for Alfa Romeo - SK20PR-A8

    Denso® Iridium Long-Life™ Spark Plug for Alfa Romeo

    PartNumber: SK20PR-A8
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Iridium-Rhodium Alloy
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: Platinum Chip
    • Hex Size: 16.0
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.032
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511034037
    • Part Description: Alfa Romeo Iridium Long-Life™ Spark Plug
    More Info
  • Denso Original U-Groove™ Spark Plug for Alfa Romeo - W20ESR-U

    Denso® Original U-Groove™ Spark Plug for Alfa Romeo

    PartNumber: W20ESR-U
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Nickel
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: U-Groove
    • Hex Size: 20.6
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.032
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511030572
    • Part Description: Alfa Romeo Original U-Groove™ Spark Plug
    More Info
  • Denso Original U-Groove™ Spark Plug for Alfa Romeo - W20EXR-U

    Denso® Original U-Groove™ Spark Plug for Alfa Romeo

    PartNumber: W20EXR-U
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Nickel
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: U-Groove
    • Hex Size: 20.6
    • Manufacturer Heat Range: 20
    • Pre-Gap Size: 0.032
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511030664
    • Part Description: Alfa Romeo Original U-Groove™ Spark Plug
    More Info
  • Denso Original U-Groove™ Spark Plug for Alfa Romeo - W22ESR-U

    Denso® Original U-Groove™ Spark Plug for Alfa Romeo

    PartNumber: W22ESR-U
    Product Specifications
    • Center Electrode Core Material: Copper
    • Center Electrode Tip Material: Nickel
    • Ground Configuration: Standard
    • Ground Electrode Core Material: Nickel
    • Ground Electrode Quantity: 1
    • Ground Electrode Tip Design: U-Groove
    • Hex Size: 20.6
    • Manufacturer Heat Range: 22
    • Pre-Gap Size: 0.032
    • Reach: 19.00
    • Resistance: 5000
    • Seat Type: Gasket
    • UPC: 042511030985
    • Part Description: Alfa Romeo Original U-Groove™ Spark Plug
    More Info

About Alfa Romeo Spark Plug

Alfa Romeo was founded on 24 June 1910 in Italy. Since the beginning, Alfa Romeo has been known for both on- and off-track performance. During its development, many popular Alfa Romeo spark plug parts have been built. The Alfa Romeo spark plug comes in many sizes ranging from 10 mm to 18mm.
Whereas, the worn spark plug needs to be repaired or replaced for better performance. An Alfa Romeo spark plug is made from an insulator that surrounds an electrode that protrudes down its center. The electrode protrudes from the end of the spark plug which helps produce a gap across the arc and into the combustion chamber which helps ignite the air/fuel mixture in the combustion chamber. To change the spark plugs on your vehicle you will need the proper size socket, a gapping gauge, a ratchet, a torque wrench, and a new set of spark plugs. We guarantee consumers reasonable and affordable shipping criteria at online shops. The vast catalogue include the braking system, the powertrain, the chassis, and other types of crucial parts, including Alfa Romeo spark plug parts.

Featured Alfa Romeo Spark Plug by Models