The 1986 Maserati Biturbo has 13 ignition parts with verified fitment on this page — 3 part types and 7 brands, covering the 2.5L V6 Turbocharged engine. Each part includes a manufacturer part number and application notes.
The ignition system on the 1986 Maserati Biturbo delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. All 13 listed parts are Spark Plug (11 parts), Spark Plug Non-Fouler (1 part) and Spark Plug Wire (1 part).
The 1986 Maserati Biturbo came with a single engine, the 2.5L V6 Turbocharged, and every part is verified against it.
7 brands supply ignition parts for the 1986 Maserati Biturbo, led by CHAMPION (4 parts), ACDELCO (3 parts) and NGK (2 parts), plus 4 more brands. Quality grades include Copper / Nickel, Iridium and Platinum.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1986 Maserati Biturbo. 3 parts have it, including ACDELCO R42XLS (Spark Plug) and NGK 3923 (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", 0.028", 0.03", 0.032", 0.035" and 0.041". Replacement brands in this table include CHAMPION, ACDELCO and NGK.
Copper / Nickel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | R42XLS | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| NGK Popular | 3923 | 🇺🇸 US 🇨🇦 CA | StandardPre-Set Gap: 0.032" | View on Amazon |
| CHAMPION | 315 | 🇺🇸 US 🇨🇦 CA | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
| CHAMPION | 332 | 🇺🇸 US 🇨🇦 CA | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
| CHAMPION | 3321 | 🇺🇸 US 🇨🇦 CA | Copper Plus | View on Amazon |
Double Platinum (lasts up to 3x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 41804 | 🇺🇸 US 🇨🇦 CA | ProfessionalDouble Platinum | View on Amazon |
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CHAMPION | 9804 | 🇺🇸 US 🇨🇦 CA | IridiumPre-Set Gap: 0.03" | View on Amazon |
| NGK | 6684 | 🇺🇸 US 🇨🇦 CA | Iridium IXPre-Set Gap: 0.032" | View on Amazon |
| SKP | SP1041 | 🇺🇸 US 🇨🇦 CA | Tapered Ground Electrode with Platinum Chip | View on Amazon |
Platinum (lasts up to 2x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 4 | 🇺🇸 US 🇨🇦 CA | ProfessionalRapidfire | View on Amazon |
| BOSCH | 4238 | 🇺🇸 US 🇨🇦 CA | Gap 0.028 in | 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.
11 Spark Plug parts are listed for the 1986 Maserati Biturbo, from CHAMPION, ACDELCO, NGK and 2 other brands. ACDELCO R42XLS carries the "Popular" badge.
In the Copper / Nickel grade, CHAMPION, ACDELCO and NGK supply 5 parts: grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. A representative part number is ACDELCO R42XLS.
In the Double Platinum (lasts up to 3x longer than Copper / Nickel) grade, ACDELCO supplies 1 part: grouped under the catalog's "Double Platinum (lasts up to 3x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is ACDELCO 41804.
The Iridium (lasts up to 4x longer than Copper / Nickel) section lists 3 options from CHAMPION, NGK and SKP — 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 9804 is listed in this group.
In the Platinum (lasts up to 2x longer than Copper / Nickel) grade, ACDELCO and BOSCH supply 2 parts: grouped under the catalog's "Platinum (lasts up to 2x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is ACDELCO 4.
Spark Plug Non-Fouler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 42004 | 🇺🇸 US 🇨🇦 CA | 14mm Gasket Seat Long Reach | View on Amazon |
This table covers the non-foulers that space a spark plug away from oil fouling.
This group shows a single part: DORMAN 42004.
Spark Plug Wire
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS | 9241341 | 🇺🇸 US 🇨🇦 CA | Direct FitSet | View on Amazon |
This table covers the Spark Plug wires.
This group shows a single part: WALKER PRODUCTS 9241341.
Buying Ignition Parts for a 1986 Maserati Biturbo
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 2.5L V6 Turbocharged 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 and Spark Plug Non-Fouler .
Frequently Asked Questions
How many ignition parts fit the 1986 Maserati Biturbo?
Our catalog currently lists 13 ignition parts for the 1986 Maserati Biturbo across 3 subcategories and 7 brands, covering the 2.5L V6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1986 Maserati Biturbo?
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 1986 Maserati Biturbo?
Notes on this page include pre-set gaps of 0.025", 0.028", 0.03", 0.032", 0.035" and 0.041". 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 1986 Maserati Biturbo 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 1986 Maserati Biturbo?
Every part on this page is matched to the 2.5L V6 Turbocharged 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 1986 Maserati Biturbo
Ignition Parts for Other Maserati Biturbo Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.