Denso 671-4163 Spark Plug Wire Set
OE Quality 60-Day Returns
Denso
 7mm

Denso 671-4163 Spark Plug Wire Set

Brand Denso 671-4163
Bushing Material 4
Distributor Coil End Terminal Type Male
Insulation Outside Diameter 7.00
Spark Plug Boot Material Sil PBT Sil
Spark Plug End Boot Degree 105
Spark Plug End Terminal Type FEMALE
Product line 7mm
Fits Toyota · 2 vehicles

OE-style replacement. Matches factory form, fit, color, and performance.

7mm wire design. Sized for dependable ignition performance.

Sil PBT Sil boots. Built with durable boot materials for lasting connection.

Cross-references ACDelco 934X, Airtex 2X1637 and Autolite 96498 for the same application. See all 14.

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Denso 671-4163 Spark Plug Wire Set

Denso 671-4163 is a 7mm spark plug wire set built to match factory-installed wire sets in form, fit, color, and performance. It is a direct replacement for 1988-1989 Toyota MR2 applications and uses OE-style construction for consistent ignition transfer.

Key Features

  • 7mm insulation outside diameter for OE-style routing and fit
  • Sil PBT Sil spark plug boot material for heat and durability support
  • 105-degree spark plug end boots for tighter engine bay routing
  • Female spark plug end terminal type with male distributor/coil end terminal type
  • Built to meet or exceed OE/OES standards
  • Direct-fit replacement for 1988-1989 Toyota MR2 ignition service

Product Details

This Denso First Time Fit wire set is engineered to mirror the original ignition wire set used on the vehicle, helping maintain proper spark delivery and reliable engine operation. The 7mm design, 105-degree boot angle, and OE-style terminal configuration support clean routing and secure connections on the Toyota MR2. If you are searching for a Denso 671-4163 spark plug wire set for 1988-1989 Toyota MR2, this part matches the listed application and construction style.

This part cross-references ACDelco 934X and NGK TX36 for the same application.

What It Helps Address

  • Misfires caused by worn or damaged ignition wires
  • Hard starting related to weak spark transfer
  • Rough idle from inconsistent ignition output
  • Voltage leakage from cracked or aged wire insulation
  • Routing issues when original boot angles no longer seat correctly

Installation Notes and Tips

Verify wire routing against the original layout before removal, and replace one lead at a time when possible to preserve firing order. Confirm the distributor and spark plug terminal styles match the vehicle before installation. For 1988-1989 Toyota MR2 service, check that the 105-degree boots seat fully and that each connection is clean and secure.

Quality Assurance

Denso positions the First Time Fit line as an OE-style replacement program, with construction that meets or exceeds OE/OES standards. That makes Denso 671-4163 a practical choice for restoring ignition wire performance on the Toyota MR2 while maintaining factory-style fit and function.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1989ToyotaMR2N/A7mm
1988ToyotaMR2N/A7mm
Directly replaces or cross-references 14 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 934XAirtex — 2X1637Autolite — 96498Belden — 700988BorgWarner — CH7416CARQUEST — 35-4094GP - Guaranteed Parts — 7469Kem — 60_2141NAPA Mileage Plus — 6714163NGK — TX36PROConnect — 154031Sorensen — 76974STI — 449Wells — QW737