20 Ignition parts are listed for the 1971 Ac 428, in 4 part types, covering the 7.0L V8 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The ignition system on the 1971 Ac 428 delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. The largest groups are Spark Plug (8 parts), Ignition Coil (6 parts) and Distributor Mounting Gasket (5 parts). The other 1 part type covers the remaining 1 part.
Every part on this page is matched to the 7.0L V8 — the only engine offered in the 1971 Ac 428.
The most listed brands for 1971 Ac 428 ignition parts are MOTORCRAFT (5 parts), FEL-PRO (2 parts) and MAHLE / CLEVITE (2 parts), plus 8 more brands. Quality grades include Copper / Nickel, Economy and Platinum.
5 parts on this 1971 Ac 428 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FEL-PRO 5511 (Distributor Mounting Gasket) and ACDELCO U505 (Ignition Coil). Click any part number to see every vehicle that part fits.
Distributor Mounting Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | 5511 | 🇺🇸 US | O-Ring Type | View on Amazon |
| MAHLE / CLEVITE | 72125 | 🇺🇸 US | Rubber | View on Amazon |
| MAHLE / CLEVITE | B25212 | 🇺🇸 US | Rubber | View on Amazon |
| VICTOR REINZ | 411040300 | 🇺🇸 US | O-Ring Type | View on Amazon |
| VICTOR REINZ | 711391900 | 🇺🇸 US | Tapered Washer | View on Amazon |
This table covers the gaskets that seal the Distributor Mounting. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
5 Distributor Mounting Gasket parts for the 1971 Ac 428 come from 3 brands — MAHLE / CLEVITE, VICTOR REINZ and FEL-PRO. The "Popular" part is FEL-PRO 5511.
This group includes FEL-PRO 5511, MAHLE / CLEVITE 72125 and MAHLE / CLEVITE B25212 and the remaining parts above.
Distributor Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 13069 | 🇺🇸 US | Tapered WasherDistributor Shaft | View on Amazon |
This table covers the seals at the Distributor. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
One part is listed for the 1971 Ac 428 — FEL-PRO 13069.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | UC12F | 🇺🇸 US | with 12 Volt Systemwith External Resistor | View on Amazon |
| SKP | SKUC12 | 🇺🇸 US | with 12 Volt Systemfor with External Resistor. | View on Amazon |
| STANDARD MOTOR PRODUCTS | UC12T | 🇺🇸 US | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | U505 | 🇺🇸 US 🇨🇦 CA | Professional | View on Amazon |
| WELLS Popular | 5C1026 | 🇺🇸 US | Requires External Resistor: YES | View on Amazon |
| STANDARD MOTOR PRODUCTS | UC12 | 🇺🇸 US | with 12 Volt Systemwith External Resistor | 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.
6 Ignition Coil parts are listed for the 1971 Ac 428, from STANDARD MOTOR PRODUCTS, FVP, SKP and 2 other brands. ACDELCO U505 carries the "Popular" badge.
In the Economy grade, FVP, SKP and STANDARD MOTOR PRODUCTS supply 3 parts: the catalog's value-priced group. A representative part number is FVP UC12F.
The Standard Replacement section lists 3 options from ACDELCO, WELLS and STANDARD MOTOR PRODUCTS — built to original-equipment specification. ACDELCO U505 is listed in this group.
Part numbers include ACDELCO U505, FVP UC12F and SKP SKUC12, among others listed above.
Spark Plug
Summary: Notes include pre-set gaps of 0.025", 0.035", 0.040" and 0.044". Replacement brands in this table include MOTORCRAFT, ACDELCO and CHAMPION.
Copper / Nickel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | R83TS | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| MOTORCRAFT Popular | SP420X | 🇺🇸 US | Copper Spark PlugInsulator Height: 60.5282 | View on Amazon |
| CHAMPION | 409 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.035" | View on Amazon |
| MOTORCRAFT | SP420 | 🇺🇸 US | Copper | View on Amazon |
Double Platinum (lasts up to 3x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOLITE | APP45 | 🇺🇸 US | Double PlatinumPre-Set Gap: 0.044" | View on Amazon |
Platinum (lasts up to 2x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT | SP549X | 🇺🇸 US | Platinum Spark PlugPlatinum | View on Amazon |
| MOTORCRAFT | SP459 | 🇺🇸 US | Finewire Platinum | View on Amazon |
| MOTORCRAFT | SP459X | 🇺🇸 US | Platinum | 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.
8 Spark Plug parts for the 1971 Ac 428 come from 4 brands — MOTORCRAFT, ACDELCO, CHAMPION and 1 other brand. The "Popular" part is ACDELCO R83TS.
The Copper / Nickel section lists 4 options from MOTORCRAFT, ACDELCO and CHAMPION — grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. ACDELCO R83TS is listed in this group.
The Double Platinum (lasts up to 3x longer than Copper / Nickel) section lists 1 option from AUTOLITE — 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. AUTOLITE APP45 is listed in this group.
The Platinum (lasts up to 2x longer than Copper / Nickel) section lists 3 options from MOTORCRAFT — grouped under the catalog's "Platinum (lasts up to 2x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. MOTORCRAFT SP549X is listed in this group.
Listed part numbers: ACDELCO R83TS, MOTORCRAFT SP420X and CHAMPION 409, plus the other parts above.
Buying Ignition Parts for a 1971 Ac 428
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 7.0L 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: Spark Plug and Ignition Coil .
Frequently Asked Questions
How many ignition parts fit the 1971 Ac 428?
Our catalog currently lists 20 ignition parts for the 1971 Ac 428 across 4 subcategories and 11 brands, covering the 7.0L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1971 Ac 428?
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 1971 Ac 428?
Notes on this page include pre-set gaps of 0.025", 0.035", 0.040" and 0.044". 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 1971 Ac 428 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 1971 Ac 428?
Every part on this page is matched to the 7.0L 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 1971 Ac 428
Ignition Parts for Other Ac 428 Years
Switch vehicle or jump to a subcategory
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.