The 2025 Cadillac CT5 has 25 ignition parts with verified fitment on this page — 6 part types and 10 brands, covering all 3 engine options (2.0L L4 Turbocharged, 3.0L V6 Turbocharged and 6.2L V8 Supercharged). Each part includes a manufacturer part number and application notes.
The ignition system on the 2025 Cadillac CT5 delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. The largest groups are Ignition Coil (7 parts), Spark Plug Wire (6 parts) and Crankshaft Position Sensor (4 parts). The other 3 part types cover the remaining 8 parts.
The 2025 Cadillac CT5 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2025 Cadillac CT5 ignition parts are GM GENUINE (5 parts), STANDARD MOTOR PRODUCTS (4 parts) and HOLSTEIN (3 parts), plus 7 more brands. Quality grades include Standard Replacement, Economy and Iridium.
4 parts on this 2025 Cadillac CT5 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP UF742F (Ignition Coil) and STANDARD MOTOR PRODUCTS 27873 (Spark Plug Wire). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 6.2L V8 Supercharged | 2CAM0433 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.2L V8 Supercharged | 12623093 | 🇺🇸 US 🇨🇦 CA | with Seal | View on Amazon |
| WELLS Fits: 6.2L V8 Supercharged | 5S13796 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the sensors that report camshaft position to the ECU. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
3 Camshaft Position Sensor parts are listed for the 2025 Cadillac CT5, from HOLSTEIN, GM GENUINE and WELLS.
In the Economy grade, HOLSTEIN supplies 1 part: the catalog's value-priced group. A representative part number is HOLSTEIN 2CAM0433.
The Standard Replacement section lists 2 options from GM GENUINE and WELLS — built to original-equipment specification. GM GENUINE 12623093 is listed in this group.
This group includes HOLSTEIN 2CAM0433, GM GENUINE 12623093 and WELLS 5S13796.
Camshaft Position Sensor Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.2L V8 Supercharged | 12626252 | 🇺🇸 US 🇨🇦 CA | Color: Orange | View on Amazon |
This table covers the seals at the Camshaft Position Sensor. 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.
This group shows a single part: GM GENUINE 12626252.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 6.2L V8 Supercharged | 2CRK0545 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Fits: 6.2L V8 Supercharged | SS12162 | 🇺🇸 US 🇨🇦 CA | Mounting Bracket Included: No | View on Amazon |
| GM GENUINE Fits: 6.2L V8 Supercharged | 12669636 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 6.2L V8 Supercharged | 5S13804 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the sensors that report crankshaft position and engine speed. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
4 Crankshaft Position Sensor parts are listed for the 2025 Cadillac CT5, from HOLSTEIN, DELPHI, GM GENUINE and 1 other brand.
Economy: 1 part, from HOLSTEIN. A representative part number is HOLSTEIN 2CRK0545.
The Standard Replacement section: 3 options from DELPHI, GM GENUINE and WELLS. DELPHI SS12162 is listed in this group.
This group includes HOLSTEIN 2CRK0545, DELPHI SS12162 and GM GENUINE 12669636 and the remaining parts above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: 6.2L V8 Supercharged | UF742F | 🇺🇸 US 🇨🇦 CA | with Round Coil(s) | View on Amazon |
| SKP Popular Fits: 6.2L V8 Supercharged | SKUF742 | 🇺🇸 US 🇨🇦 CA | Round Type | View on Amazon |
| HOLSTEIN Fits: 6.2L V8 Supercharged | 2IGC0538 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 6.2L V8 Supercharged | SKIC147 | 🇺🇸 US 🇨🇦 CA | Square Type | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.2L V8 Supercharged | 12726023 | 🇺🇸 US 🇨🇦 CA | Services Coils Marked DelphiMelco Coil | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.2L V8 Supercharged | UF742 | 🇺🇸 US 🇨🇦 CA | with Round Coil(s) | View on Amazon |
| WELLS Fits: 6.2L V8 Supercharged | 5C1876 | 🇺🇸 US 🇨🇦 CA | 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.
7 Ignition Coil parts are listed for the 2025 Cadillac CT5, from SKP, FVP, HOLSTEIN and 3 other brands. FVP UF742F carries the "Popular" badge.
Economy: 4 parts, from SKP, FVP and HOLSTEIN. A representative part number is FVP UF742F.
The Standard Replacement section: 3 options from GM GENUINE, STANDARD MOTOR PRODUCTS and WELLS. GM GENUINE 12726023 is listed in this group.
Listed part numbers: FVP UF742F, SKP SKUF742 and HOLSTEIN 2IGC0538, plus the other parts above.
Spark Plug
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 6.2L V8 Supercharged | 41128 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentIridium | View on Amazon |
| NGK Fits: 6.2L V8 Supercharged | 4344 | 🇺🇸 US 🇨🇦 CA | Iridium IXPre-Set Gap: 0.044" | View on Amazon |
| NGK Fits: 6.2L V8 Supercharged | 5476 | 🇺🇸 US 🇨🇦 CA | Laser IridiumPre-Set Gap: 0.036" | View on Amazon |
Platinum (lasts up to 2x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Fits: 6.2L V8 Supercharged | 5019 | 🇺🇸 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.
4 Spark Plug parts for the 2025 Cadillac CT5 come from 2 brands — NGK and ACDELCO.
In the Iridium (lasts up to 4x longer than Copper / Nickel) grade, NGK and ACDELCO supply 3 parts: 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 ACDELCO 41128.
The Platinum (lasts up to 2x longer than Copper / Nickel) section lists 1 option from 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. NGK 5019 is listed in this group.
Part numbers include ACDELCO 41128, NGK 4344 and NGK 5476, among others listed above.
Spark Plug Wire
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: 6.2L V8 Supercharged | SK19431551 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 6.2L V8 Supercharged | 3147 | 🇺🇸 US 🇨🇦 CA | SetOutside Diameter: 9 | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.2L V8 Supercharged | 7873 | 🇺🇸 US 🇨🇦 CA | SetOutside Diameter: 10 | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 6.2L V8 Supercharged | 27873 | 🇺🇸 US 🇨🇦 CA | Pro SeriesSet | View on Amazon |
| WALKER PRODUCTS Popular Fits: 6.2L V8 Supercharged | 9241829A | 🇺🇸 US 🇨🇦 CA | Direct FitSet | View on Amazon |
| GM GENUINE Fits: 6.2L V8 Supercharged | 12716289 | 🇺🇸 US 🇨🇦 CA | Distributor Coil End Boot Degree: 45 DD | View on Amazon |
This table covers the Spark Plug wires.
6 Spark Plug Wire parts are listed for the 2025 Cadillac CT5, from STANDARD MOTOR PRODUCTS, SKP, WALKER PRODUCTS and 1 other brand. STANDARD MOTOR PRODUCTS 27873 carries the "Popular" badge.
Economy: 2 parts, from SKP and STANDARD MOTOR PRODUCTS. A representative part number is SKP SK19431551.
The Premium section lists 1 option from STANDARD MOTOR PRODUCTS — a step above OE specification in materials, tolerances or warranty terms. STANDARD MOTOR PRODUCTS 7873 is listed in this group.
The Standard Replacement section: 3 options from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and GM GENUINE. STANDARD MOTOR PRODUCTS 27873 is listed in this group.
Part numbers include STANDARD MOTOR PRODUCTS 27873, SKP SK19431551 and STANDARD MOTOR PRODUCTS 3147, among others listed above.
Buying Ignition Parts for a 2025 Cadillac CT5
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Match the engine first. Every ignition part here is engine-specific; each row shows which engine(s) it fits.
- 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 Wire .
Frequently Asked Questions
How many ignition parts fit the 2025 Cadillac CT5?
Our catalog currently lists 25 ignition parts for the 2025 Cadillac CT5 across 6 subcategories and 10 brands, covering all 3 engine options (2.0L L4 Turbocharged, 3.0L V6 Turbocharged and 6.2L V8 Supercharged). Each part is matched to the engine(s) it fits.
Do ignition parts differ between 2025 Cadillac CT5 engines?
Yes. Every ignition part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of ignition problems on a 2025 Cadillac CT5?
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 2025 Cadillac CT5?
Notes on this page include pre-set gaps of 0.031", 0.032", 0.036", 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 2025 Cadillac CT5 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 2025 Cadillac CT5?
First match the engine — each row shows which engine(s) the part fits. 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 2025 Cadillac CT5
Ignition Parts for Other Cadillac CT5 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.