The 1975 Bentley Corniche has 20 ignition parts with verified fitment on this page — 2 part types and 12 brands, covering the 6.8L V8 engine. Each part includes a manufacturer part number and application notes.
On the 1975 Bentley Corniche, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. All 20 listed parts are Ignition Coil (10 parts) and Spark Plug (10 parts).
Every part on this page is matched to the 6.8L V8 — the only engine offered in the 1975 Bentley Corniche.
The most listed brands for 1975 Bentley Corniche ignition parts are NGK (5 parts), CHAMPION (3 parts) and STANDARD MOTOR PRODUCTS (2 parts), plus 9 more brands. Quality grades include Economy, Standard Replacement and Copper / Nickel.
4 parts on this 1975 Bentley Corniche page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including STANDARD MOTOR PRODUCTS UC15T (Ignition Coil) and ACDELCO R44XLS (Spark Plug). Click any part number to see every vehicle that part fits.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | UC15T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| FVP | UC15F | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN | 2IGC0058 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP | SKUC15T | 🇺🇸 US 🇨🇦 CA | Coil Pack | View on Amazon |
| SPECTRA PREMIUM | C622 | 🇺🇸 US 🇨🇦 CA | Pack | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular | 48863 | 🇺🇸 US 🇨🇦 CA | Connections May be Eyelet or Spade | View on Amazon |
| STANDARD MOTOR PRODUCTS | UC15 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS | C15 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS | 9201041 | 🇺🇸 US 🇨🇦 CA | Single Coil | View on Amazon |
| WELLS | 5C1019 | 🇺🇸 US 🇨🇦 CA | Used on most import products with 12 Volt system with Internal resistorUniversal 12 Volt Coil | View on Amazon |
This table covers the coils that fire each spark plug. Typical signs include a misfire that follows one cylinder, a snap in damp weather, or a coil that is swollen or cracked. Swap a suspect coil with a neighbor to confirm, then replace boots that tore on the way off.
10 Ignition Coil parts are listed for the 1975 Bentley Corniche, from STANDARD MOTOR PRODUCTS, FVP, HOLSTEIN and 6 other brands. STANDARD MOTOR PRODUCTS UC15T carries the "Popular" badge.
In the Economy grade, STANDARD MOTOR PRODUCTS, FVP, HOLSTEIN and 2 other brands supply 5 parts: the catalog's value-priced group. A representative part number is STANDARD MOTOR PRODUCTS UC15T.
The Standard Replacement section lists 5 options from NGK, STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS and 2 other brands — built to original-equipment specification. NGK 48863 is listed in this group.
Spark Plug
Summary: Notes include pre-set gaps of 0.032", 0.033", 0.035", 0.039" and 0.040". Replacement brands in this table include NGK, CHAMPION and ACDELCO.
Copper / Nickel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | R44XLS | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| NGK Popular | 6578 | 🇺🇸 US 🇨🇦 CA | StandardPre-Set Gap: 0.032" | View on Amazon |
| CHAMPION | 405 | 🇺🇸 US 🇨🇦 CA | Copper PlusPre-Set Gap: 0.035" | View on Amazon |
| NGK | 2635 | 🇺🇸 US 🇨🇦 CA | V-PowerPre-Set Gap: 0.040" | View on Amazon |
Double Platinum (lasts up to 3x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 41828 | 🇺🇸 US 🇨🇦 CA | ProfessionalDouble Platinum | View on Amazon |
| AUTOLITE | APP65 | 🇺🇸 US 🇨🇦 CA | Double PlatinumPre-Set Gap: 0.035" | View on Amazon |
| CHAMPION | 7322 | 🇺🇸 US 🇨🇦 CA | Double Platinum PowerPre-Set Gap: 0.032" | View on Amazon |
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK | 97382 | 🇺🇸 US 🇨🇦 CA | Iridium IXPre-Set Gap: 0.040" | View on Amazon |
Platinum (lasts up to 2x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CHAMPION | 3405 | 🇺🇸 US 🇨🇦 CA | Platinum PowerPlug Type: RN14PMC | View on Amazon |
| NGK | 2763 | 🇺🇸 US 🇨🇦 CA | G-PowerPre-Set Gap: 0.040" | 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.
10 Spark Plug parts for the 1975 Bentley Corniche come from 4 brands — NGK, CHAMPION, ACDELCO and 1 other brand. The "Popular" part is ACDELCO R44XLS.
The Copper / Nickel section lists 4 options from NGK, ACDELCO and CHAMPION — grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. ACDELCO R44XLS is listed in this group.
The Double Platinum (lasts up to 3x longer than Copper / Nickel) section lists 3 options from ACDELCO, AUTOLITE and CHAMPION — 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. ACDELCO 41828 is listed in this group.
In the Iridium (lasts up to 4x longer than Copper / Nickel) grade, NGK supplies 1 part: grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is NGK 97382.
The Platinum (lasts up to 2x longer than Copper / Nickel) section lists 2 options from CHAMPION and NGK — grouped under the catalog's "Platinum (lasts up to 2x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. CHAMPION 3405 is listed in this group.
Buying Ignition Parts for a 1975 Bentley Corniche
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 6.8L V8 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: Ignition Coil and Spark Plug .
Frequently Asked Questions
How many ignition parts fit the 1975 Bentley Corniche?
Our catalog currently lists 20 ignition parts for the 1975 Bentley Corniche across 2 subcategories and 12 brands, covering the 6.8L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1975 Bentley Corniche?
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 1975 Bentley Corniche?
Notes on this page include pre-set gaps of 0.032", 0.033", 0.035", 0.039" and 0.040". 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 1975 Bentley Corniche 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 1975 Bentley Corniche?
Every part on this page is matched to the 6.8L V8 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 1975 Bentley Corniche
Ignition Parts for Other Bentley Corniche Years
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