2019 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

10 Camshaft Position Sensor parts are listed for the 2019 Chevrolet Blazer, from GM GENUINE, HOLSTEIN, PRENCO and 6 other brands. GM GENUINE 12646782 carries the "Popular" badge.

In the Economy grade, HOLSTEIN and PRENCO supply 2 parts: the catalog's value-priced group. A representative part number is HOLSTEIN 2CAM0408.

The Standard Replacement section lists 8 options from GM GENUINE, ASTEMO / HITACHI, DELPHI and 4 other brands — built to original-equipment specification. GM GENUINE 12646782 is listed in this group.

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

This group shows a single part: 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

9 Crankshaft Position Sensor parts are listed for the 2019 Chevrolet Blazer, from DORMAN, HOLSTEIN, PRENCO and 6 other brands. DELPHI SS12172 carries the "Popular" badge.

Economy: 4 parts, from DORMAN, HOLSTEIN, PRENCO and 1 other brand. A representative part number is DORMAN 962604.

The Standard Replacement section: 5 options from DELPHI, STANDARD MOTOR PRODUCTS, GM GENUINE and 2 other brands. DELPHI SS12172 is listed in this group.

Listed part numbers: DELPHI SS12172, DORMAN 962604 and HOLSTEIN 2CRK0542, plus the other 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 are listed for the 2019 Chevrolet Blazer, from DELPHI, B&B, HOLSTEIN and 8 other brands. DELPHI GN10682 carries the "Popular" badge.

Economy: 4 parts, from B&B, HOLSTEIN, SPECTRA PREMIUM and 1 other brand. A representative part number is B&B BB2680.

The Premium section lists 2 options from DELPHI — a step above OE specification in materials, tolerances or warranty terms. DELPHI GN10682 is listed in this group.

The Standard Replacement section: 6 options from GM GENUINE, WALKER PRODUCTS, NGK and 3 other brands. GM GENUINE 25202791 is listed in this group.

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

15 Spark Plug parts for the 2019 Chevrolet Blazer come from 7 brands — NGK, CHAMPION, BOSCH and 4 other brands. The "Popular" part is NGK 4344.

The Copper / Nickel section lists 1 option from CHAMPION — grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. CHAMPION 570 is listed in this group.

The Double Platinum (lasts up to 3x longer than Copper / Nickel) section lists 1 option from BOSCH — grouped under the catalog's "Double Platinum (lasts up to 3x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. BOSCH 8107 is listed in this group.

In the Iridium (lasts up to 4x longer than Copper / Nickel) grade, NGK, DENSO, ACDELCO and 4 other brands supply 9 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 4344.

The Platinum (lasts up to 2x longer than Copper / Nickel) section lists 3 options from NGK, BOSCH and CHAMPION — 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.

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 90220 is listed in this group.

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

STANDARD MOTOR PRODUCTS supplies both parts for the 2019 Chevrolet Blazer.

Economy: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS 20951.

The Standard Replacement section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS SPP190E is listed in this group.

This group includes STANDARD MOTOR PRODUCTS 20951 and STANDARD MOTOR PRODUCTS SPP190E.

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

2 Spark Plug Tube Seal parts are listed for the 2019 Chevrolet Blazer, from GM GENUINE and MAHLE / CLEVITE.

Part numbers include GM GENUINE 12613249 and MAHLE / CLEVITE GS34108.