2025 Chevrolet Blazer 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

8 Camshaft Position Sensor parts for the 2025 Chevrolet Blazer come from 5 brands — GM GENUINE, STANDARD MOTOR PRODUCTS, WELLS and 2 other brands. The "Popular" part is GM GENUINE 12646782.

The Economy section lists 1 option from HOLSTEIN — the catalog's value-priced group. HOLSTEIN 2CAM0581 is listed in this group.

In the Standard Replacement grade, GM GENUINE, STANDARD MOTOR PRODUCTS and WELLS supply 3 parts: built to original-equipment specification. A representative part number is GM GENUINE 12646782.

4 further parts sit outside the graded sections, with the same engine-level match.

Part numbers include GM GENUINE 12646782, HOLSTEIN 2CAM0581 and STANDARD MOTOR PRODUCTS PC1113, among others listed above.

This table covers the interrupter wheels the camshaft sensor reads. Read more

This group shows a single part: GM GENUINE 55510087.

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 2025 Chevrolet Blazer — GM GENUINE 12626252.

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

6 Crankshaft Position Sensor parts for the 2025 Chevrolet Blazer come from 4 brands — GM GENUINE, WELLS, HOLSTEIN and 1 other brand.

The Economy section: 1 option from HOLSTEIN. HOLSTEIN 2CRK0730 is listed in this group.

Standard Replacement: 3 parts, from DELPHI, GM GENUINE and WELLS. A representative part number is DELPHI SS12343.

2 further parts sit outside the graded sections, with the same engine-level match.

This group includes HOLSTEIN 2CRK0730, DELPHI SS12343 and GM GENUINE 12646781 and the remaining parts above.

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

12 Ignition Coil parts for the 2025 Chevrolet Blazer come from 8 brands — GM GENUINE, HOLSTEIN, STANDARD MOTOR PRODUCTS and 5 other brands. The "Popular" part is GM GENUINE 12741091.

The Economy section: 2 options from HOLSTEIN and SKP. HOLSTEIN 2IGC0598 is listed in this group.

In the Premium grade, DELPHI supplies 1 part: a step above OE specification in materials, tolerances or warranty terms. A representative part number is DELPHI GN11100.

Standard Replacement: 8 parts, from GM GENUINE, STANDARD MOTOR PRODUCTS, DENSO and 2 other brands. A representative part number is GM GENUINE 12741091.

1 further part sits outside the graded sections, with the same engine-level match.

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

6 Spark Plug parts are listed for the 2025 Chevrolet Blazer, from NGK, ACDELCO and BOSCH.

Part numbers include ACDELCO 41103IP, ACDELCO 41130 and BOSCH 85006, among others listed above.

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

3 Spark Plug / Ignition Coil Boot parts for the 2025 Chevrolet Blazer come from 2 brands — STANDARD MOTOR PRODUCTS and GM GENUINE.

The Economy section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS 34181 is listed in this group.

Standard Replacement: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS SPP227E.

1 further part sits outside the graded sections, with the same engine-level match.

Listed part numbers: STANDARD MOTOR PRODUCTS 34181, STANDARD MOTOR PRODUCTS SPP227E and GM GENUINE 55511557.

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. Read more

This group shows a single part: GM GENUINE 12613249.