NGK 9338 RC-TX02 Silicone Spark Plug Wire Set 1985-1987 Toyota Corolla AE86 1.6L

The NGK 9338 RC-TX02 Silicone Spark Plug Wire Set is a direct-fit, vehicle-specific ignition wire set engineered for the 1985, 1986, and 1987 Toyota Corolla AE86 platform with the 4A-GEC 1.6L L4 DOHC engine. NGK9338 features a 7mm magnetic-core wire with a high-temp silicone outer jacket, EPDM/silicone inner insulation, premium fiberglass reinforcement, and stainless steel positive-locking terminals. At 8k ohm/meter resistance half the impedance of conventional carbon-core wire 9338 delivers superior voltage transfer and full-spectrum EMI/RFI suppression. Made in Japan. Limited Lifetime Warranty.

Key Features  NGK 9338 RC-TX02 Wire Set

• 7mm variable-pitch magnetic core - ferrite alloy wound at variable pitch for ultra-low resistance and broadband EMI/RFI suppression across the entire frequency spectrum
• 8k ohm/meter resistance - roughly half the 16k ohm/m of conventional carbon-core wire, improving voltage delivery at every RPM
• High-temp silicone outer jacket - rated to 250 degrees C (482 degrees F), resists heat soak, oil, and underhood chemicals that degrade OEM rubber wires
• EPDM/silicone inner insulation - maximizes dielectric strength, preventing crossfire and voltage leak even on a modified or boosted 4A-GEC
• Premium fiberglass braiding reinforcement - controls conductor movement and adds abrasion resistance in tight AE86 engine bays
• Silicone-sealed spark plug boots - glued with silicone sealer for a watertight, heat-resistant bond; black 180-degree (straight) boots at cylinder ends, black 90-degree boot at coil end
• Stainless steel positive-locking terminals - up to 3 serrated crimps bite into the jacket and inner insulation for maximum pull-out retention; C-shaped spring clip locks securely to the spark plug terminal
• Numbered wires and color-coded coil lead - cylinder identification is printed on each wire for fast, accurate installation on the 4A-GEC distributor
• Vehicle-specific fit - engineered to match the exact wire routing, boot angles, and plug reach of the AE86 4A-GEC; not a universal cut-to-fit set
• Made in Japan - 100% genuine NGK product manufactured at NGK's Japanese production facilities
• Limited Lifetime Warranty - NGK's strongest warranty tier, covering wire sets for the life of the product

OEM and Aftermarket Cross-Reference

NGK9338 (MPN RC-TX02) is a direct replacement for the following OEM and competing aftermarket wire sets. Use this table to confirm NGK9338 supersedes the part currently on your AE86.

What's Included 9338 Wire Set

NGK ships as one complete, ready-to-install ignition wire set. No additional wires, terminals, or hardware purchases are required.

• 4 spark plug wires with coil lead (complete set for the 4-cylinder 4A-GEC)
• 4 straight (180-degree) black silicone spark plug boots one per cylinder
• 1 right-angle (90-degree) black silicone coil/distributor boot included in the 4-wire count
• Stainless steel positive-locking C-clip terminals pre-installed on all wire ends
• Cylinder identification numbers printed on each wire for correct routing

Fitment - 1985-1987 Toyota Corolla AE86 1.6L 4A-GEC

NGK fits the Toyota Corolla AE86 platform with the 4A-GEC 1.6L L4 DOHC engine only. This wire set is not compatible with the 4A-GE 20V (Silvertop or Blacktop), the 3A-U, or any other Toyota engine family. Confirm your engine code on the valve cover or in your VIN decode before ordering. Every year and trim below is a verified, individual application.

Full Specifications  NGK 9338 RC-TX02

Warranty and Legal

NGK 9338 carries NGK's Limited Lifetime Warranty the strongest warranty category in the NGK product lineup, reserved specifically for wire sets and coil-on-plug boots. This warranty reflects NGK's confidence in the silicone jacket, fiberglass reinforcement, and stainless steel terminal construction of the RC-TX02. See package for complete warranty terms.

Installing will not void your Toyota factory powertrain warranty. Under the federal Magnuson-Moss Warranty Act, a manufacturer cannot void your warranty simply because you installed an aftermarket part. They must demonstrate that the aftermarket part directly caused the specific failure being claimed.

California residents: This product contains chemicals known to the State of California to cause cancer. See www.p65warnings.ca.gov.

About NGK Spark Plugs

NGK Spark Plugs Co., Ltd. is the world's largest manufacturer of spark plugs and a leading supplier of ignition components including wire sets, coils, and oxygen sensors. Founded in Japan in 1936, NGK supplies ignition components as original equipment to Toyota, Honda, Subaru, Nissan, and most major global automakers. NGK 9338 is manufactured at NGK's Japanese production facilities to the same specifications used in OE supply chains. NGK's variable-pitch magnetic core technology the same core construction found in NGK 9338 was developed specifically to deliver lower resistance and broader EMI/RFI suppression than conventional spiral-wound or straight carbon-core designs. When you install an NGK wire set, you are installing the same engineering standard that came on your AE86 from the factory.

Related NGK Wire Sets for Toyota AE86 Platform

NGK produces several wire sets for the broader AE86 and adjacent Toyota platforms. NGK 9338 (RC-TX02) is the correct set for the 1985-1987 US-market Corolla with the 4A-GEC. If your vehicle or engine differs from this application, verify the correct part number below before ordering.

Frequently Asked Questions

What vehicles does NGK 9338 fit?
NGK 9338 (RC-TX02) fits the 1985, 1986, and 1987 Toyota Corolla on the AE86 platform equipped with the 4A-GEC 1.6L L4 DOHC engine. This includes the DLX, LE, LE Limited, Sport DLX, Sport GTS, and Sport SR5 trims for 1985-1986, plus the DLX, FX, FX16, FX16 GTS, LE, Sport DLX, Sport GTS, and Sport SR5 for 1987. Verify your engine code (stamped on the block near the alternator or printed on the valve cover) before ordering.

Is NGK9338 compatible with the 4A-GE 20V Silvertop or Blacktop?
No. NGK9338 is engineered for the 4A-GEC (16-valve DOHC, US market, 1985-1987). The 4A-GE 20-valve Silvertop and Blacktop engines use a different distributor arrangement and coil configuration. Installing NGK9338 on a 20V engine will result in wires that are the wrong length and boot angles that do not match. Use a wire set specifically listed for your 20V variant.

What is the difference between the NGK MPN RC-TX02 and the NGK stock number 9338?
They are two identifiers for the exact same product. RC-TX02 is the alphanumeric manufacturer part number (MPN) used on NGK packaging and technical catalogs. 9338 is the NGK USA numeric stock number used by retailers like AutoZone, RockAuto, and Newparts. NGK9338 is the combined SKU used by Black Ops Auto Works to prevent any ambiguity.

Will NGK 9338 fit the Toyota Corolla Levin or Sprinter Trueno AE86?
NGK RC-TX02 is also listed in international catalogs for the 1983-1987 Toyota Corolla Levin and Sprinter Trueno AE86 with the JDM 4A-GE engine. However, NGK9338 as listed here is verified for the US-market 4A-GEC application. If you are building a JDM AE86, confirm the part against your distributor cap terminal layout before installing.

What is the wire resistance of NGK 9338?
NGK9338 measures 8,000 ohm per meter (8k ohm/m). This is approximately half the resistance of conventional carbon-core wires, which typically run 14,000-16,000 ohm/m. Lower resistance means more of the coil's voltage reaches the spark plug gap, which matters most on a high-revving 4A-GEC at wide-open throttle.

Does NGK 9338 suppress radio frequency interference?
Yes. The variable-pitch magnetic core a ferrite alloy wound in a changing spiral pattern creates inductance that absorbs EMI and RFI across the entire frequency spectrum. This suppresses interference in stereos, ECUs, and any electronics running on the AE86's 12V system. This is the same suppression mechanism used on the original OE wire set.

Is NGK 9338 legal in California?
NGK9338 is a direct-replacement ignition wire set it does not alter or remove any emissions control equipment and is legal for road use in all 50 states including California. Note that this product carries a California Proposition 65 warning for chemicals known to cause cancer. See www.p65warnings.ca.gov.

Will installing NGK 9338 void my Toyota factory warranty?
No. Under the federal Magnuson-Moss Warranty Act, an automaker or dealer cannot void your factory warranty simply because you installed an aftermarket part. They would need to prove the aftermarket part directly caused the specific failure they are refusing to cover. A direct-replacement wire set does not affect that analysis.

How does NGK 9338 compare to the DENSO 671-4162 or Bosch 09227?
All three are verified cross-references for the same application. NGK 9338 uses a variable-pitch magnetic (ferrite) core a more advanced construction than the straight resistive core in many competing sets. The mag core delivers lower resistance (8k ohm/m) while still suppressing EMI. NGK also supplies wire sets as OE to Toyota, meaning the RC-TX02 design traces directly to the factory specification for the 4A-GEC.

What boots angles does NGK 9338 use?
NGK9338 uses straight 180-degree black silicone boots at all four spark plug ends and a right-angle 90-degree black silicone boot at the coil/distributor end. This matches the stock AE86 4A-GEC distributor cap geometry. No modification to the boot angles is required or recommended.

Where is NGK 9338 made?
NGK9338 is made in Japan. Country of origin is ACES product data (HTS: 8544300000, COO: JP) and by listing as a 100% genuine NGK Japan product.

How many wires are in the NGK 9338 set?
The set contains 4 wires with coil lead. The 4A-GEC is a 4-cylinder engine, so the set includes one wire per cylinder plus the coil-to-distributor lead. This is a complete replacement for every wire in the factory ignition harness between the distributor and the spark plugs.