2021 Honda Civic Ignition Parts

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. Read more

12 Camshaft Position Sensor parts for the 2021 Honda Civic come from 9 brands — HOLSTEIN, WALKER PRODUCTS, WELLS and 6 other brands. The "Popular" part is HOLSTEIN 2CAM0643. 2 parts fit every engine; the other 10 are engine-specific.

The Economy section lists 4 options from HOLSTEIN, ULTRA-POWER and VEMO — the catalog's value-priced group. HOLSTEIN 2CAM0643 is listed in this group.

In the Standard Replacement grade, WALKER PRODUCTS, WELLS, ASTEMO / HITACHI and 3 other brands supply 8 parts: built to original-equipment specification. A representative part number is ASTEMO / HITACHI CPS0027.

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. Read more

One part is listed for the 2021 Honda Civic — MAHLE / CLEVITE 76757.

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. Read more

17 Crankshaft Position Sensor parts for the 2021 Honda Civic come from 11 brands — HOLSTEIN, ASTEMO / HITACHI, STANDARD MOTOR PRODUCTS and 8 other brands. The "Popular" part is HOLSTEIN 2CRK0737.

The Economy section: 5 options from HOLSTEIN, SPECTRA PREMIUM, ULTRA-POWER and 1 other brand. HOLSTEIN 2CRK0737 is listed in this group.

Standard Replacement: 12 parts, from ASTEMO / HITACHI, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 4 other brands. A representative part number is ASTEMO / HITACHI CPS0223.

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. Read more

18 Ignition Coil parts for the 2021 Honda Civic come from 10 brands — SPECTRA PREMIUM, DELPHI, DENSO and 7 other brands. The "Popular" part is DELPHI GN10886. 2 parts fit every engine; the other 16 are engine-specific.

The Economy section: 4 options from SPECTRA PREMIUM, HOLSTEIN and SKP. HOLSTEIN 2IGC0563 is listed in this group.

In the Premium grade, DELPHI supplies 2 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is DELPHI GN10886.

Standard Replacement: 12 parts, from DENSO, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 3 other brands. A representative part number is DENSO 6732201.

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. Read more

14 Spark Plug parts are listed for the 2021 Honda Civic, from NGK, BOSCH, DENSO and 1 other brand. NGK 93501 carries the "Popular" badge.

The Iridium (lasts up to 4x longer than Copper / Nickel) section lists 6 options from NGK, BOSCH, CHAMPION and 1 other brand — grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. NGK 93501 is listed in this group.

In the Platinum (lasts up to 2x longer than Copper / Nickel) grade, NGK supplies 1 part: grouped under the catalog's "Platinum (lasts up to 2x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is NGK 92649.

In the Ruthenium (maximum durability & ignitability) grade, NGK supplies 1 part: grouped under the catalog's "Ruthenium (maximum durability & ignitability)" designation — the notes column spells out what sets them apart. A representative part number is NGK 92274.

6 ungrouped parts are not assigned to a grade, with the same engine-level match.

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. Read more

This group shows a single part: STANDARD MOTOR PRODUCTS SPP221E.