NGK 51378 Spark Plug Wire Set
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 NGK Spark Plug Wire Set

NGK 51378 Spark Plug Wire Set

Brand NGK 51378
Insulation Color Blue
Insulation Material Silicone
Noise Suppression Type Yes
Core Material Smag
Universal Or Specific Fit Specific
Insulation Outside Diameter 7.00
Part Number Rc-gmx008
Stock Number 51378
Product line NGK Spark Plug Wire Set
Fits Buick · 23 vehicles

Specific-fit design. Matches the original application requirements for a precise ignition wire replacement.

Silicone insulation. Provides flexible, heat-resistant protection for dependable wire routing.

Noise suppression. Helps reduce electrical interference for cleaner ignition operation.

Cross-references Anchor 9681, Anchor 9896 and DENSO Auto Parts 671-8067 for the same application. See all 11.

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NGK Spark Plug Wire Set 51378

The NGK Spark Plug Wire Set 51378 is a specific-fit ignition wire set for classic Buick applications without High Energy Ignition (HEI). It uses silicone insulation and noise suppression construction to support stable spark delivery and reduced electrical interference.

Key Features

  • Specific-fit spark plug wire set for direct application matching
  • Silicone insulation for heat resistance and flexibility
  • Noise suppression design helps reduce ignition interference
  • SMag core material supports consistent electrical transfer
  • Blue insulation for easy visual identification

Product Details

Built under NGK’s Spark Plug Wire Set line, part number 51378 is engineered for older Buick models that use a non-HEI ignition setup. Fits 1973-1974 Buick Apollo, N/A; Fits 1973-1974 Buick Century, N/A; Fits 1973-1974 Buick Electra, N/A; Fits 1973-1974 Buick Estate Wagon, N/A; Fits 1973-1974 Buick LeSabre, N/A; Fits 1973-1974 Buick Regal, N/A; Fits 1973-1974 Buick Riviera, N/A; Fits 1973 Buick Centurion, N/A. This part cross-references Gates 51378 for the same application. The wire set is intended to maintain dependable ignition performance while matching the vehicle’s original configuration requirements.

Common Uses

  • Restoring weak or inconsistent spark delivery
  • Replacing aged or cracked ignition wires
  • Addressing radio-frequency interference from worn ignition components
  • Correcting misfire symptoms caused by deteriorated wire insulation
  • Servicing a non-HEI ignition system on classic Buick models

Installation Notes

Verify engine and ignition system configuration before ordering, since this part is listed for vehicles without HEI. Match each wire to the original routing and terminal locations during installation. Inspect related ignition components, including plugs and distributor cap, before final assembly.

Quality Assurance

NGK brings more than 80 years of ignition experience and manufactures premium ignition products to meet OE standards. Part number 51378 reflects NGK’s OE-focused approach to durability and operational performance.

Related reading

This part fits 23 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
1974BuickApollo5.7LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1974BuickCentury7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1974BuickCentury5.7LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1974BuickElectra7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1974BuickEstate Wagon7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1974BuickLeSabre7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1974BuickLeSabre5.7LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1974BuickRegal7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1974BuickRegal5.7LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1974BuickRiviera7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickApollo5.7LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickCenturion7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickCenturion5.7LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickCentury7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickCentury5.7LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickElectra7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickEstate Wagon7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickEstate Wagon5.7LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickLeSabre7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickLeSabre5.7LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickRegal7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickRegal5.7LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
1973BuickRiviera7.5LV8without High Energy Ignition (HEI); NGK Spark Plug Wire Set
Directly replaces or cross-references 11 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 9681Anchor — 9896DENSO Auto Parts — 671-8067Dixie Electric Ltd — 12877Gates — 51378TYC — 700139671-8057096818607496074CH828