1994 Nissan D21 Ignition and Tune-Up Products

Essential 1994 Nissan D21 Ignition and Tune-Up Products

DENSO – Spark Plug Wire Set: Aluminum Steel Core, 5 Wire Set (Part No.671-4194)

Spark Plug Wire Set: Aluminum Steel Core, 5 Wire Set

from

$42.99
DENSO First Time Fit Ignition Wire Sets are identical in form fit color and performance to the factory-installed wire sets. Every part of each wire sets construction meets or exceeds OE/OES standards.

Product Features:
  • Each wire is pre-cut to exact length so the wire set is ready to install right out of the box
  • Identical OE end caps are designed to “click” into place for easy installation and a secure fit
  • Strong connections – through a patented process, the terminals are attached to provide an extremely strong connection, ensuring the cable and boot will not separate during removal and installation
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NGK – Ignition Wire Set (Part No.F102055668NGK)

Ignition Wire Set

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$138.81
NGK Resistor Spark Plug Wire Sets utilize a construction method known as variable pitch wire winding to create resistance to radio frequency interference. The variable pitch winding (loose/tight/loose) provides suppression throughout a very wide range by scrambling and breaking up the electrical waves radiated by the firing of the spark plugs. A ferrite magnetic layer consisting of a mixture of rubber, plastic and powdered ferrite magnetic materials, offers uniform resistance and unsurpassed conductivity. NGK wires have a lower resistance than conventional carbon core wires (8k ohm/meter versus 16k ohm/meter). This comparison is important to remember when you consider that many manufacturers recommend wires be replaced when the resistance exceeds 20k ohm/meter. This does not leave much margin for wear when the wire may only meet original standards at the very early stages of its life.

Product Features:
  • OE-Equivalent.
  • OEM style connectors for easy Installation.
  • Superior Firing and Fuel Savings
  • Outstanding Durability and Performance
  • Excellent Noise Suppression
  • Numbered for easy cylinder identification.
  • High quality EPDM and Silicone coverings.
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Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBC3673)

Ignition Knock (Detonation) Sensor

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$56.99
MotoRad Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All MotoRad Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:
  • Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
  • Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
  • Designed to meet or exceed all OEM specifications in fit, form & function
  • Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
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Hitachi – Knock Sensor – New Actual OE Part (Part No.KNS0001)

Knock Sensor - New Actual OE Part

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$78.99
Hitachi is a Tier One OE supplier to the largest automobile manufacturers globally, delivery industry leading quality, and exceeding customer expectations with our products and service. Hitachi is bringing that same knowledge and expertise to the premium products we deliver in the Aftermarket because Quality Matters. Hitachi sensor line supports accurate measurement for reliable engine performance.

Product Features:
  • Hitachi is a Tier 1 OE supplier for knock sensors
  • 100% NEW, never remanufactured
  • Meets the OE performance and durability standards for this application
  • Accurate and reliable measurements
  • Provides accurate measurement; reliable engine performance.
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YEC – YEC Distributor Rotor (Part No.F202028251YEC)

YEC Distributor Rotor

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$9.53
YEC Distributor Caps and Rotors are made from top quality materials throughout to ensure high performance and long product life.

Product Features:
  • Superior Surface Finish
  • RFI Suppression
  • Precision-machined Contacts
  • Finely -tooled Metal Mounting Sleeve
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Carquest Premium – Distributor Rotor (Part No.DAC1208)

Distributor Rotor

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$7.49
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Carquest Premium – Distributor T1024: 100% New, With Cap and Rotor (Part No.T1024)

Distributor T1024: 100% New, With Cap and Rotor

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$284.99
Carquest Premium distributors are built to meet or exceed the original equipment (OE) specifications for each application. Our distributors are built by a manufacturer that meets IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each distributor is supplied with the cap, rotor and any seals needed for installation. Carquest Premium distributors are 100% new and undergo extensive validation testing to ensure long-lasting ignition performance and reliability.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • 100% new unit with no core charges
  • Precision machined shafts result in high speed accuracy and help prevent bearing failures
  • Every distributor is tested to ensure reliable and long-lasting performance
  • O-rings or gaskets included where applicable
  • Precision Engineered ignition modules and plugs ensure proper performance plus precise connection.
  • Precision machined and ground shafts assure high speed accuracy and prevent bearing failures.
  • Original Equipment Equivalent high voltage ignition coils.
  • 100% New Components and fasteners eliminate premature failures.
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Carquest Premium – Distributor T58642: 100% New, With Cap and Rotor (Part No.T58642)

Distributor T58642: 100% New, With Cap and Rotor

from

$309.99
Carquest Premium distributors are built to meet or exceed the original equipment (OE) specifications for each application. Our distributors are built by a manufacturer that meets IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each distributor is supplied with the cap, rotor and any seals needed for installation. Carquest Premium distributors are 100% new and undergo extensive validation testing to ensure long-lasting ignition performance and reliability.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • 100% new unit with no core charges
  • Precision machined shafts result in high speed accuracy and help prevent bearing failures
  • Every distributor is tested to ensure reliable and long-lasting performance
  • O-rings or gaskets included where applicable
  • Precision Engineered ignition modules and plugs ensure proper performance plus precise connection.
  • Precision machined and ground shafts assure high speed accuracy and prevent bearing failures.
  • Original Equipment Equivalent high voltage ignition coils.
  • 100% New Components and fasteners eliminate premature failures.
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YEC – YEC Distributor Cap (Part No.F201053114YEC)

YEC Distributor Cap

from

$13.23
YEC Distributor Caps and Rotors are made from top quality materials throughout to ensure high performance and long product life.

Product Features:
  • Superior Surface Finish
  • RFI Suppression
  • Precision-machined Contacts
  • Finely -tooled Metal Mounting Sleeve
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Carquest Premium – Distributor Cap and Rotor Kit (Part No.CAC1852)

Distributor Cap and Rotor Kit

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$17.29
Distributor Cap and Rotor Kit

NGK – Spark Plug Wire Set: Variable Pitch Magnetic Core, Lifetime Warranty (Part No.9177)

Spark Plug Wire Set: Variable Pitch Magnetic Core, Lifetime Warranty

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$56.99
NGK variable pitch resistor cables provide uniform resistance and ensure outstanding electrical conductivity in high-quality cables. Outer EPDM/silicone jacket and inner insulation contain high voltage currents for excellent dielectric strength. NGK variable pitch magnetic core cables produce the necessary impedance to suppress interference throughout the entire frequency spectrum for exceptional EMI/RFI noise suppression. OE or better specified spark plug and distributor boots ensure the highest quality fit, performance and durability in every application. Spark plug boots are glued to NGK cable with a silicone sealer for a watertight seal. Stainless steel terminals utilizing up to 3 serrated crimps bite into cable jacket and inner insulation for the highest terminal retention strength (wherever possible). Locking C-shaped spring clip with corrosion-resistant plating ensures a secure and positive spark plug terminal connection.

Product Features:
  • PERFECT FIT FOR YOUR VEHICLE: Built to OEM tolerances with OE quality or better materials
  • BUILT TO LAST: Outer Jacket built to withstand temperatures greater than 250 degrees C, inner insulation EPDM or silicone for best dielectric strength
  • STAINLESS STEEL TERMINALS: Provide the highest possible retention to ensure positive connections through the life of the set
  • PREMIUM ALLOY WINDING: Variable pitch winding over Ferrite magnetic alloy coating delivers ultra low resistance and excellent interference protection
  • CYLINDER LEAD ID: Cylinder lead identification tags where possible make installation easier
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Carquest Premium – Spark Plug Wire Set (Part No.35-4225)

Spark Plug Wire Set

from

$29.99
CARQUEST Premium Spark Plug Wire Sets are engineered to restore ignition wire reliability and performance. They are designed to meet or exceed OE design requirements, performance, fit, form and function of the OE wire. Stainless steel magnetic winding del

Product Features:
  • SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
  • Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
  • 100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
  • EPDM inner insulation stops power-robbing voltage leaks.
  • With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
  • Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
  • Excellent interference suppression and consistent performance
  • Easy lock terminals for more convenient installation.
  • Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
  • Broad coverage available for most vehicles on the road today
  • Include grease pack to ensure easy installation and removal
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Carquest Premium – Spark Plug Wire Set: 7 Wires, Increased performance, Designed for direct fit (Part No.35-6063)

Spark Plug Wire Set: 7 Wires, Increased performance, Designed for direct fit

from

$94.99
Product Features:
  • SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
  • Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
  • 100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
  • EPDM inner insulation stops power-robbing voltage leaks.
  • With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
  • Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
  • Excellent interference suppression and consistent performance
  • Easy lock terminals for more convenient installation.
  • Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
  • Broad coverage available for most vehicles on the road today
  • Include grease pack to ensure easy installation and removal
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DENSO – Spark Plug Wire Set: Aluminum Steel Core, 7 Wire Set (Part No.671-6195)

Spark Plug Wire Set: Aluminum Steel Core, 7 Wire Set

from

$94.99
DENSO First Time Fit Ignition Wire Sets are identical in form fit color and performance to the factory-installed wire sets. Every part of each wire sets construction meets or exceeds OE/OES standards.

Product Features:
  • Each wire is pre-cut to exact length so the wire set is ready to install right out of the box
  • Identical OE end caps are designed to “click” into place for easy installation and a secure fit
  • Strong connections – through a patented process, the terminals are attached to provide an extremely strong connection, ensuring the cable and boot will not separate during removal and installation
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Felpro – Multi-Purpose O-Ring (Part No.417)

Multi-Purpose O-Ring

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$2.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Felpro – Multi-Purpose O-Ring (Part No.70015)

Multi-Purpose O-Ring

from

$3.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered for the sealing repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
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Carquest Premium – Ignition Coil (Part No.EBC1526)

Ignition Coil

from

$40.99
Carquest Premium engine management products provide the right ignition coils for a wide range of domestic and import applications. They deliver the highest performance and durability under demanding conditions. Designed to meet OE quality and performance standards using top-quality components, our ignition coils are the best choice for your maintenance and repair needs.

Product Features:
  • Coils are designed and engineered to be an OE quality replacement for fit and performance
  • High-strength dielectric epoxy and 100% copper windings used to deliver high-temperature performance and vibration resistance
  • High-efficiency laminations produce a high-energy spark and reliable performance
  • Factories use ISO 9001 and IATF 16949 standards to deliver products designed to meet or exceed OE voltage output specifications
  • Top-quality components and materials used to deliver maximum performance and long service life under tough operating conditions
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Delphi – Ignition Coil (Part No.F3000252932DEL)

Ignition Coil

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$58.25
Delphi ignition coils feature precise spark timing response for increased fuel economy and faster crank-to-run. The ignition coils provide accurate electrical energy to create a voltage potential at the spark plug, providing for superior engine performance that adjusts to driving and environment conditions. Plus, like all Delphi ignition system components, they enable engine management systems to maintain tighter control over emissions, economy and performance.

Product Features:
  • Improved dwell accuracy decreases module and coil temperatures for greater reliability
  • Noise abatement material between laminations reduces audible coil noise
  • Cassettes have improved primary connector for greater ease of assembly compared to designs with one connector for each coil
  • Lower primary inductance provides high-speed performance
  • Early and precise electronic spark timing helps improve fuel economy and provides faster crank-to-run
  • Higher energy delivered to combustible mixture provides cleaner combustion to help manufacturers meet on-board diagnostics (OBD II) requirements
  • Direct connection to spark plugs (via small boot) eliminates spark plug wires
  • Composite iron coils provide programmable energy
  • Coil per cylinder dwell overlap electronics deliver better high speed performance and better heat dissipation compared to some conventional technologies
  • Coil per cylinder ramp and fire electronics decrease power dissipation and increase efficiency
  • Radio frequency interference (RFI) suppressor optional
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Delphi – Ignition Coil (Part No.GN10024)

Ignition Coil

from

$52.99
Delphi OE technology ignition products are validated to match the vehicles system; OE quality replacement parts for the right fit , form and function; Delphi coils provide OE performance, durability and electromagnetic capacity level requirements.

Product Features:
  • Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
  • Delphi ignition coils are designed to operate as part of an integral engine management system to insert power into spark plugs and ensure fast starts; consistent engine performance and optimized fuel efficiency
  • Delphi uses winding process techniques to control the length of wire between adjacent windings; that’s important since more length means greater voltage differences and can create more pressure that could break down the insulation and wire coating
  • We back our ignition coil design with proven materials, such as high quality wires and wire coating that resists the cracks, pin holes and imperfections that most often lead to failure issues
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Dorman – Help – Spark Plug Non-Foulers – 14mm Gasket Seat Long Reach (Part No.42004)

Spark Plug Non-Foulers - 14mm Gasket Seat Long Reach

from

$9.99
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles
  • Ideal solution – this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion
  • Durable construction – made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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DENSO – Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PK16R8 (Part No.3301)

Double Platinum Spark Plug:  OE Performance, lasts 60K+ Miles, PK16R8

from

$9.49
Manufactured to the strictest OE performance, durability and emissions standards.

Product Features:
  • OE grade platinum on both center and ground electrods
  • Premium shell construction with machine-rolled threads
  • Superior thermal conductivity
  • Sustained spark performance over 60,000 miles
  • Reduced secondary required voltage, increased ignition efficiency
  • Satisfied customers, reduced shop comebacks
  • Double Platinum
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Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5224)

Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition

from

$9.99
Our best spark plug! Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.

Product Features:
  • 0.6 mm finewire design improves ignitability
  • Patented V-trimmed platinum sidewire technology resists wear
  • OE equivalent design is engineered for every engine
  • Designed for better overall durability with virtually no gap erosion
  • Double Iridium-Enhanced Alloy Technology Center Electrode: Offers improved durability and wear resistance for a longer-lasting spark plug.
  • Designed and Engineered in the USA: Reflects over 100 years of Autolite’s engineering experience and expertise.
  • Gasket Seat Type: Ensures a secure and proper fit for optimal performance.
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DENSO – U-Groove Spark Plug: OE Performance, lasts 30K+ Miles, K16GPR-U11 (Part No.3135)

U-Groove Spark Plug:  OE Performance, lasts 30K+ Miles, K16GPR-U11

from

$3.49
OE Performance, lasts 30K+ Miles, K16GPR-U11. The unique U-Groove ground electrode is one of the finest features of DENSO spark plugs, designed to fire leaner mixtures than conventional plugs for improved ignitability. Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads, ensuring a secure fit. With a wide range of part numbers for thousands of applications, including classic and collector cars, these spark plugs last twice as long as most conventional plugs. Each plug is 100% pre-fired to assure reliable operation, featuring a nickel center electrode tip and a flat seat type for optimal performance.

Product Features:
  • Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
  • Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Lasts twice as long as most conventional plugs
  • 100% pre-fired to assure reliable operation
  • U-Groove Conventional
  • Long-Lasting Durability: Lasts over 30,000 miles, twice as long as most conventional spark plugs, providing extended performance and reliability.
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Autolite Iridium – Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability (Part No.AI3923)

Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability

from

$10.99
Optimal Performance, Durability, Ignitability. The Autolite Iridium Ultra is an engineered OE replacement iridium spark plug featuring a laser-welded 0.5mm proprietary iridium alloy finewire center electrode that ensures optimal fuel efficiency, acceleration, and focused ignitability. Its nickel-plated shell resists corrosion, while the high-alumina ceramic insulator provides increased strength. Additionally, the proprietary platinum sidewire technology enhances durability and performance, making it a top choice for reliable ignition. It also features a resistor type and a flat seat type for added compatibility and performance.

Product Features:
  • Autolite Iridium Ultra is an engineered OE replacement iridium spark plug.
  • A laser-welded 0.5mm proprietary iridium alloy finewire center electrode provides optimal fuel efficiency, acceleration and focused ignitability.
  • Nickel-plated shell to resist corrosion.
  • High-alumina ceramic insulator for increased strength.
  • Laser welded 0.5mm Iridium finewire center electrode.
  • Proprietary platinum sidewire technology.
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Carquest Premium – Ignition Module (Part No.CBE1191)

Ignition Module

from

$85.99
CARQUEST Ignition Modules are built by an ignition systems manufacturer with expertise in the entire vehicle spark system.

Product Features:
  • CARQUEST Ignition Modules creates and refines the timing of the engine using various sensors and readings throughout the spark system in order to create an efficiently running engine.
  • CARQUEST Ignition Modules use current and voltage limiting circuitry in order to prevent the ignition coil from over voltage/current. Over voltages can allow for coils to create excessive heat which can damage to the ignition module resulting in check eng
  • CARQUEST Ignition Modules are 100% individually tested for all product functionalities including over voltage, timing and dwell.
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Carquest Premium – Ignition Module (Part No.CBE1176)

Ignition Module

from

$188.99
CARQUEST Ignition Modules are built by an ignition systems manufacturer with expertise in the entire vehicle spark system.

Product Features:
  • CARQUEST Ignition Modules creates and refines the timing of the engine using various sensors and readings throughout the spark system in order to create an efficiently running engine.
  • CARQUEST Ignition Modules use current and voltage limiting circuitry in order to prevent the ignition coil from over voltage/current. Over voltages can allow for coils to create excessive heat which can damage to the ignition module resulting in check eng
  • CARQUEST Ignition Modules are 100% individually tested for all product functionalities including over voltage, timing and dwell.
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1994 Nissan D21 Ignition and Tune-Up Products

You count on your 1994 Nissan D21 to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Ignition and Tune-Up Products. With 83 Ignition and Tune-Up Products ranging in price from $1.99 to $309.99, you’re sure to find everything you need for your 1994 Nissan D21.

Brands matter. If you want to shop a specific Ignition and Tune-Up Products brand, we stock 15 different brands like Autolite, NGK, and E3. 1994 Nissan D21 Ignition and Tune-Up Products start as low as $1.99!

One of the best ways to find top quality OEM or aftermarket Ignition and Tune-Up Products is by asking professionals. Short of that, you can shop with confidence thanks to our 4,712 extensive product reviews on 1994 Nissan D21 Ignition and Tune-Up Products. Some of the top-rated Ignition and Tune-Up Products products we carry are DiamondFIRE Automotive Spark Plug: More Power, Saves Gas with 4.3 stars and Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life with 4.6 stars.

Did we mention you can order your Ignition and Tune-Up Products from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Ignition and Tune-Up Products inventory for your 1994 Nissan D21 below to get started!

Top-Rated Ignition and Tune-Up Products Brands For Your 1994 Nissan D21

Trusted Ignition and Tune-Up Products OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1994 Nissan D21 running right for years to come. In our inventory you’ll find brands like Autolite, NGK, E3, and even more.

Popular Carquest Ignition and Tune-Up Products

You’ll find popular Carquest brand products across Distributors. All are waiting to get your 1994 Nissan D21 back on the road. Some of the top-rated Carquest products in these categories are:
DISTRIBUTOR CAP
from $28.05
(1)
DISTRIBUTOR CAP
Distributor Cap Kits
DISTRIBUTOR ROTOR
from $16.05
(1)
DISTRIBUTOR ROTOR
Distributor Rotor Buttons

Top-Rated Autolite Ignition and Tune-Up Products


If Autolite are what you’re looking for, our inventory holds plenty. We stock Autolite brand Ignition and Tune-Up Products for your 1994 Nissan D21, and some of our most reviewed Autolite parts include:

FAQs for 1994 Nissan D21 Ignition and Tune-Up Products

What are the most purchased Ignition and Tune-Up Products for the 1994 Nissan D21?

Out of 83 Ignition and Tune-Up Products for the 1994 Nissan D21, the most popular in our inventory are:
Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition
from $9.99
This product is not rated
Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition
Spark Plugs

What are the top-rated 1994 Nissan D21 Ignition and Tune-Up Products?

Top-rated Ignition and Tune-Up Products for your 1994 Nissan D21 based on customer reviews/ratings are:
DiamondFIRE Automotive Spark Plug: More Power, Saves Gas
from $6.99
(188)
DiamondFIRE Automotive Spark Plug: More Power, Saves Gas
“Gain hp with e3”
Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life
from $6.79
(123)
Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life
“Plugs fit well. Checked gap on all 8 and they were pretty much right on. Fuel economy seems to have improved”
Iridium IX Spark Plug: Single Iridium Fine Wire, ZFR5FIX-11
from $11.99
(116)
Iridium IX Spark Plug: Single Iridium Fine Wire, ZFR5FIX-11
“This was the OEM plug for my car, so of course they were the perfect repalcement part. The original plugs were great so why mess with perfection!”