2021 Jeep Wrangler 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

43 Camshaft Position Sensor parts for the 2021 Jeep Wrangler come from 13 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, PRENCO and 10 other brands. The "Popular" part is HOLSTEIN 2CAM0371. They are grouped as Economy, Full Service Kit and Standard Replacement, with Standard Replacement the largest group at 28 parts from DELPHI, MOPAR, NTK and 5 other brands.

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

29 Crankshaft Position Sensor parts for the 2021 Jeep Wrangler come from 11 brands — WALKER PRODUCTS, DELPHI, WELLS and 8 other brands. The "Popular" part is HOLSTEIN 2CRK0800. They are grouped as Economy, Full Service Kit and Standard Replacement, with Standard Replacement the largest group at 19 parts from DELPHI, WALKER PRODUCTS, WELLS and 3 other brands.

This table covers the controllers that fire the glow plugs. Read more

One part is listed for the 2021 Jeep Wrangler — MOPAR 68282916AA.

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

36 Ignition Coil parts for the 2021 Jeep Wrangler come from 16 brands — STANDARD MOTOR PRODUCTS, NGK, WALKER PRODUCTS and 13 other brands. The "Popular" part is SKP SKIC102. Grades run from Economy through Standard Replacement; Standard Replacement is the most populated section, led by NGK, WALKER PRODUCTS, DENSO and 4 other brands.

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

16 Spark Plug parts are listed for the 2021 Jeep Wrangler, from NGK, MOPAR, DENSO and 3 other brands. NGK 97408 carries the "Popular" badge.

In the Double Platinum (lasts up to 3x longer than Copper / Nickel) grade, NGK and MOPAR supply 2 parts: 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. A representative part number is NGK 97408.

The Iridium (lasts up to 4x longer than Copper / Nickel) section lists 8 options from DENSO, NGK, BOSCH and 2 other brands — grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. BOSCH 96337 is listed in this group.

In the Platinum (lasts up to 2x longer than Copper / Nickel) grade, CHAMPION and BOSCH supply 2 parts: 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 CHAMPION 3032.

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.

3 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

3 Spark Plug / Ignition Coil Boot parts for the 2021 Jeep Wrangler come from 2 brands — STANDARD MOTOR PRODUCTS and ACDELCO.

The Economy section lists 1 option from STANDARD MOTOR PRODUCTS — the catalog's value-priced group. STANDARD MOTOR PRODUCTS 20441 is listed in this group.

In the Standard Replacement grade, ACDELCO and STANDARD MOTOR PRODUCTS supply 2 parts: built to original-equipment specification. A representative part number is ACDELCO 16071.

Listed part numbers: STANDARD MOTOR PRODUCTS 20441, ACDELCO 16071 and STANDARD MOTOR PRODUCTS SPP103E.

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. Read more

3 Spark Plug Gasket parts for the 2021 Jeep Wrangler come from MOPAR.

This group includes MOPAR 5048235AA, MOPAR 5184778AB and MOPAR 53021569AD.

This table covers the Spark Plug tubes. Read more

2 Spark Plug Tube parts are listed for the 2021 Jeep Wrangler, from MELLING and MOPAR.

This group includes MELLING MSPT11 and MOPAR 4893868AB.

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: AUTOTECNICA CY1416169.