The 1990 Ferrari Testarossa has 7 ignition parts with verified fitment on this page — 1 part type and 3 brands, covering the 4.9L H12 engine. Each part includes a manufacturer part number and application notes.
On the 1990 Ferrari Testarossa, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. Every listed part is a Spark Plug.
The 1990 Ferrari Testarossa came with a single engine, the 4.9L H12, and every part is verified against it.
3 brands supply ignition parts for the 1990 Ferrari Testarossa, led by CHAMPION (3 parts), DENSO (2 parts) and NGK (2 parts). Quality grades include Copper / Nickel and Iridium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1990 Ferrari Testarossa. 2 parts have it, including CHAMPION 9700 (Spark Plug) and NGK 6681 (Spark Plug). Each part number opens a page with every vehicle that part fits.
Spark Plug
Summary: Notes include pre-set gaps of 0.025", 0.027", 0.028", 0.032" and 0.033". Replacement brands in this table include CHAMPION, DENSO and NGK.
Copper / Nickel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CHAMPION | 809 | 🇺🇸 US 🇨🇦 CA | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
| CHAMPION | 809C | 🇺🇸 US 🇨🇦 CA | Copper Plus | View on Amazon |
| DENSO | 4116 | 🇺🇸 US 🇨🇦 CA | U-Groove ConventionalPre-Set Gap: 0.027" | View on Amazon |
| NGK | 4855 | 🇺🇸 US 🇨🇦 CA | StandardPre-Set Gap: 0.028" | View on Amazon |
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CHAMPION Popular | 9700 | 🇺🇸 US 🇨🇦 CA | IridiumPre-Set Gap: 0.033" | View on Amazon |
| NGK Popular | 6681 | 🇺🇸 US 🇨🇦 CA | Iridium IXPre-Set Gap: 0.032" | View on Amazon |
| DENSO | 5373 | 🇺🇸 US 🇨🇦 CA | Iridium PowerPre-Set Gap: 0.032" | View on Amazon |
This table covers the spark plugs for this engine. Typical signs include misfire under load, rough idle, or a flashing check-engine light. Verify the gap even on pre-gapped plugs, and replace coil boots that come off a high-mileage engine.
7 Spark Plug parts are listed for the 1990 Ferrari Testarossa, from CHAMPION, DENSO and NGK. CHAMPION 9700 carries the "Popular" badge.
In the Copper / Nickel grade, CHAMPION, DENSO and NGK supply 4 parts: grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. A representative part number is CHAMPION 809.
The Iridium (lasts up to 4x longer than Copper / Nickel) section lists 3 options from CHAMPION, NGK and DENSO — grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. CHAMPION 9700 is listed in this group.
Part numbers include CHAMPION 9700, CHAMPION 809 and CHAMPION 809C, among others listed above.
Buying Ignition Parts for a 1990 Ferrari Testarossa
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 4.9L H12 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Spark Plug .
Frequently Asked Questions
How many ignition parts fit the 1990 Ferrari Testarossa?
Our catalog currently lists 7 ignition parts for the 1990 Ferrari Testarossa across 1 subcategory and 3 brands, covering the 4.9L H12 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1990 Ferrari Testarossa?
Common symptoms include misfires under load, rough idle, flashing check-engine light, or poor starting in damp weather. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What spark-plug gap is listed for the 1990 Ferrari Testarossa?
Notes on this page include pre-set gaps of 0.025", 0.027", 0.028", 0.032" and 0.033". Still verify against spec — even “pre-gapped” plugs should be checked before they go in.
What should I replace at the same time?
Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1990 Ferrari Testarossa was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 1990 Ferrari Testarossa?
Every part on this page is matched to the 4.9L H12 engine. Then gap matters even on “pre-gapped” plugs — verify against spec, and replace coil boots when they come off a high-mileage engine. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1990 Ferrari Testarossa
Ignition Parts for Other Ferrari Testarossa Years
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