The 2025 Ram 4500 has 12 ignition parts with verified fitment on this page — 5 part types and 3 brands, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each part includes a manufacturer part number and application notes.
On the 2025 Ram 4500, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. Most of the listed parts are Camshaft Position Sensor (5 parts), Crankshaft Position Sensor (3 parts) and Spark Plug / Ignition Coil Boot (2 parts). The other 2 part types cover the remaining 2 parts.
The 2025 Ram 4500 was sold with both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2025 Ram 4500 ignition parts are MOPAR (6 parts), STANDARD MOTOR PRODUCTS (5 parts) and HELLA (1 part). Quality grades include Standard Replacement and Economy.
Each part number listed for the 2025 Ram 4500 opens a page with every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | PC823T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 6.4L V8 | 358380381 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR Fits: 6.4L V8 | 5149054AC | 🇺🇸 US 🇨🇦 CA | Fits HEMI Upgrade HD EngineCrew Cab Wheelbase 4or HEMI Upgrade HD Engine | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | PC823 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68581416AB | 🇺🇸 US 🇨🇦 CA | Fits Cummins Engine.50 State Emissions, with Emergency Vehicle Emissions | 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.
5 Camshaft Position Sensor parts are listed for the 2025 Ram 4500, from STANDARD MOTOR PRODUCTS, MOPAR and HELLA.
In the Economy grade, STANDARD MOTOR PRODUCTS supplies 1 part: the catalog's value-priced group. A representative part number is STANDARD MOTOR PRODUCTS PC823T.
The Standard Replacement section lists 3 options from HELLA, MOPAR and STANDARD MOTOR PRODUCTS — built to original-equipment specification. HELLA 358380381 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Listed part numbers: STANDARD MOTOR PRODUCTS PC823T, HELLA 358380381 and MOPAR 5149054AC, plus the other parts above.
Condenser / Capacitor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 56028644AC | 🇺🇸 US 🇨🇦 CA | Fits HEMI Upgrade HD EngineCrew Cab Wheelbase 4or HEMI Upgrade HD Engine | View on Amazon |
This table covers the capacitors used in this electrical or A/C circuit.
One part is listed for the 2025 Ram 4500 — MOPAR 56028644AC.
Crankshaft Position Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 68140678AB | 🇺🇸 US 🇨🇦 CA | Fits HEMI Upgrade HD EngineCrew Cab Wheelbase 4or HEMI Upgrade HD Engine | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68581417AB | 🇺🇸 US 🇨🇦 CA | Fits Cummins Engine.50 State Emissions, with Emergency Vehicle Emissions | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | PC987 | 🇺🇸 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.
3 Crankshaft Position Sensor parts are listed for the 2025 Ram 4500, from MOPAR and STANDARD MOTOR PRODUCTS.
Listed part numbers: MOPAR 68140678AB, MOPAR 68581417AB and STANDARD MOTOR PRODUCTS PC987.
Spark Plug / Ignition Coil Boot
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | 20521 | 🇺🇸 US 🇨🇦 CA | Federal Wire | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | SPP217E | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the silicone and rubber boots that insulate the coil-to-plug spark path. Typical signs include a misfire in the rain, carbon tracking on the boot, or a snap when you pop the coil off. Replace boots as a set on a high-mileage engine; one cracked boot will take the coil with it.
STANDARD MOTOR PRODUCTS supplies both parts for the 2025 Ram 4500.
Economy: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS 20521.
The Standard Replacement section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS SPP217E is listed in this group.
Listed part numbers: STANDARD MOTOR PRODUCTS 20521 and STANDARD MOTOR PRODUCTS SPP217E.
Spark Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 53021569AD | 🇺🇸 US 🇨🇦 CA | Spark Plug Well Gasket | View on Amazon |
This table covers the gaskets that seal the Spark Plug. 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.
One part is listed for the 2025 Ram 4500 — MOPAR 53021569AD.
Buying Ignition Parts for a 2025 Ram 4500
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: Camshaft Position Sensor and Crankshaft Position Sensor .
Frequently Asked Questions
How many ignition parts fit the 2025 Ram 4500?
Our catalog currently lists 12 ignition parts for the 2025 Ram 4500 across 5 subcategories and 3 brands, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.
Do ignition parts differ between 2025 Ram 4500 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 Ram 4500?
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 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 Ram 4500 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 Ram 4500?
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 Ram 4500
Ignition Parts for Other Ram 4500 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.