41 Ignition parts are listed for the 2021 Honda Ridgeline, in 5 part types, covering the 3.5L V6 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The ignition system on the 2021 Honda Ridgeline delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. The largest groups are Ignition Coil (14 parts), Camshaft Position Sensor (9 parts) and Crankshaft Position Sensor (9 parts). The other 2 part types cover the remaining 9 parts.
Every part on this page is matched to the 3.5L V6 — the only engine offered in the 2021 Honda Ridgeline.
The most listed brands for 2021 Honda Ridgeline ignition parts are STANDARD MOTOR PRODUCTS (4 parts), NGK (4 parts) and HOLSTEIN (3 parts), plus 16 more brands. Quality grades include Standard Replacement, Economy and Iridium.
9 parts on this 2021 Honda Ridgeline page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ASTEMO / HITACHI CPS0025 (Camshaft Position Sensor) and STANDARD MOTOR PRODUCTS PC813T (Crankshaft Position Sensor). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2CAM0357 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO | 4E1178 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ULTRA-POWER | 5S11895 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI Popular | CPS0025 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Popular | PC811 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DELPHI | SS11378 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DENSO | 1962009 | 🇺🇸 US 🇨🇦 CA | Engine Camshaft Position Sensor | View on Amazon |
| WALKER PRODUCTS | 2351481 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| WELLS | 5S11895 | 🇺🇸 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.
9 Camshaft Position Sensor parts are listed for the 2021 Honda Ridgeline, from HOLSTEIN, PRENCO, ULTRA-POWER and 6 other brands. ASTEMO / HITACHI CPS0025 carries the "Popular" badge.
In the Economy grade, HOLSTEIN, PRENCO and ULTRA-POWER supply 3 parts: the catalog's value-priced group. A representative part number is HOLSTEIN 2CAM0357.
The Standard Replacement section lists 6 options from ASTEMO / HITACHI, STANDARD MOTOR PRODUCTS, DELPHI and 3 other brands — built to original-equipment specification. ASTEMO / HITACHI CPS0025 is listed in this group.
This group includes ASTEMO / HITACHI CPS0025, HOLSTEIN 2CAM0357 and PRENCO 4E1178 and the remaining parts above.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PC813T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| HOLSTEIN | 2CRK0261 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO | 4D1285 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SPECTRA PREMIUM | S10319 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PC813 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DELPHI | SS11389 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HELLA | 358380461 | 🇺🇸 US 🇨🇦 CA | Black Edition or RTL Model or RTL-E or Sport | View on Amazon |
| WALKER PRODUCTS | 2352084 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| WELLS | 5S15100 | 🇺🇸 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.
9 Crankshaft Position Sensor parts are listed for the 2021 Honda Ridgeline, from STANDARD MOTOR PRODUCTS, HOLSTEIN, PRENCO and 5 other brands. STANDARD MOTOR PRODUCTS PC813T carries the "Popular" badge.
Economy: 4 parts, from STANDARD MOTOR PRODUCTS, HOLSTEIN, PRENCO and 1 other brand. A representative part number is STANDARD MOTOR PRODUCTS PC813T.
The Standard Replacement section: 5 options from STANDARD MOTOR PRODUCTS, DELPHI, HELLA and 2 other brands. STANDARD MOTOR PRODUCTS PC813 is listed in this group.
Listed part numbers: STANDARD MOTOR PRODUCTS PC813T, HOLSTEIN 2CRK0261 and PRENCO 4D1285, plus the other parts above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Popular | UF713 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| B&B | BB2713 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN | 2IGC0513 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO | 368260 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP | SKUF713 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SPECTRA PREMIUM | C872 | 🇺🇸 US 🇨🇦 CA | Ignition Coil Mounts to Cylinder Head | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI | GN10733 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Popular | 6732316 | 🇺🇸 US 🇨🇦 CA | Direct Ignition Coil or Stick Coil | View on Amazon |
| WALKER PRODUCTS Popular | 9212284 | 🇺🇸 US 🇨🇦 CA | Single Coil | View on Amazon |
| BECK/ARNLEY | 1788540 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NGK | 48886 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS | UF713 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS | COP616 | 🇺🇸 US 🇨🇦 CA | Body code YK3 | View on Amazon |
| WELLS | 5C1881 | 🇺🇸 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.
14 Ignition Coil parts are listed for the 2021 Honda Ridgeline, from ULTRA-POWER, B&B, HOLSTEIN and 11 other brands. ULTRA-POWER UF713 carries the "Popular" badge.
Economy: 6 parts, from ULTRA-POWER, B&B, HOLSTEIN and 3 other brands. A representative part number is ULTRA-POWER UF713.
The Premium section lists 1 option from DELPHI — a step above OE specification in materials, tolerances or warranty terms. DELPHI GN10733 is listed in this group.
The Standard Replacement section: 7 options from DENSO, WALKER PRODUCTS, BECK/ARNLEY and 4 other brands. DENSO 6732316 is listed in this group.
Spark Plug
Summary: Notes include pre-set gaps of 0.040", 0.042" and 0.044". Replacement brands in this table include NGK, BOSCH and CHAMPION.
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular | 93175 | 🇺🇸 US 🇨🇦 CA | Iridium IXReach: 26.5 mm | View on Amazon |
| BOSCH | 96337 | 🇺🇸 US 🇨🇦 CA | OE Fine Wire Double IridiumPre-Set Gap: 0.040" | View on Amazon |
| BOSCH | 96305 | 🇺🇸 US 🇨🇦 CA | OE Fine Wire Double Iridium Pin-to-PinPre-Set Gap: 0.044" | View on Amazon |
| CHAMPION | 9417 | 🇺🇸 US 🇨🇦 CA | IridiumPre-Set Gap: 0.042" | View on Amazon |
| DENSO | 3483 | 🇺🇸 US 🇨🇦 CA | Iridium Long LifeSuper Ignition Plug (SIP) | View on Amazon |
| NGK | 95350 | 🇺🇸 US 🇨🇦 CA | Laser Iridium High IgnitabilityPre-Set Gap: 0.044" | View on Amazon |
| SKP | SP1031 | 🇺🇸 US 🇨🇦 CA | Iridium XP | View on Amazon |
Ruthenium (maximum durability & ignitability)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular | 92274 | 🇺🇸 US 🇨🇦 CA | Ruthenium HX High IgnitabilityHex Size: 14mm | 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 2021 Honda Ridgeline come from 5 brands — NGK, BOSCH, CHAMPION and 2 other brands. The "Popular" part is NGK 93175.
In the Iridium (lasts up to 4x longer than Copper / Nickel) grade, NGK, BOSCH, CHAMPION and 2 other brands supply 7 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 NGK 93175.
The Ruthenium (maximum durability & ignitability) section lists 1 option from NGK — grouped under the catalog's "Ruthenium (maximum durability & ignitability)" designation — the notes column spells out what sets them apart. NGK 92274 is listed in this group.
This group includes NGK 93175, BOSCH 96337 and BOSCH 96305 and the remaining parts above.
Spark Plug Tube Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE | GS33907 | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
This table covers the seals at the Spark Plug Tube. 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 2021 Honda Ridgeline — MAHLE / CLEVITE GS33907.
Buying Ignition Parts for a 2021 Honda Ridgeline
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 3.5L V6 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 Camshaft Position Sensor .
Frequently Asked Questions
How many ignition parts fit the 2021 Honda Ridgeline?
Our catalog currently lists 41 ignition parts for the 2021 Honda Ridgeline across 5 subcategories and 19 brands, covering the 3.5L V6 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 2021 Honda Ridgeline?
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 2021 Honda Ridgeline?
Notes on this page include pre-set gaps of 0.040", 0.042" 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 2021 Honda Ridgeline 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 2021 Honda Ridgeline?
Every part on this page is matched to the 3.5L V6 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 2021 Honda Ridgeline
Ignition Parts for Other Honda Ridgeline 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.