2021 Nissan Altima 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

15 Camshaft Position Sensor parts for the 2021 Nissan Altima come from 10 brands — STANDARD MOTOR PRODUCTS, DELPHI, WALKER PRODUCTS and 7 other brands. The "Popular" part is HOLSTEIN 2CAM0192.

The Economy section lists 5 options from HOLSTEIN, STANDARD MOTOR PRODUCTS, PRENCO and 2 other brands — the catalog's value-priced group. HOLSTEIN 2CAM0192 is listed in this group.

In the Standard Replacement grade, STANDARD MOTOR PRODUCTS, ASTEMO / HITACHI, DELPHI and 3 other brands supply 6 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS PC775.

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

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

16 Crankshaft Position Sensor parts for the 2021 Nissan Altima come from 11 brands — STANDARD MOTOR PRODUCTS, DELPHI, WALKER PRODUCTS and 8 other brands. The "Popular" part is ULTRA-POWER 5S11488.

The Economy section: 5 options from ULTRA-POWER, AUTOTECNICA, HOLSTEIN and 2 other brands. ULTRA-POWER 5S11488 is listed in this group.

Standard Replacement: 7 parts, from DELPHI, STANDARD MOTOR PRODUCTS, ASTEMO / HITACHI and 4 other brands. A representative part number is DELPHI SS11988.

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

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

15 Ignition Coil parts for the 2021 Nissan Altima come from 11 brands — ULTRA-POWER, DELPHI, BECK/ARNLEY and 8 other brands. The "Popular" part is SKP SKUF861.

The Economy section: 5 options from ULTRA-POWER, SKP, PRENCO and 1 other brand. SKP SKUF861 is listed in this group.

In the Premium grade, DELPHI and ASTEMO / HITACHI supply 3 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is ASTEMO / HITACHI IGC0099.

Standard Replacement: 6 parts, from BECK/ARNLEY, STANDARD MOTOR PRODUCTS, NGK and 1 other brand. A representative part number is BECK/ARNLEY 1788590.

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 2021 Nissan Altima, from NGK and BOSCH. NGK 93501 carries the "Popular" badge.

The Iridium (lasts up to 4x longer than Copper / Nickel) section lists 4 options from NGK and BOSCH — 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 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.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Part numbers include NGK 93501, BOSCH 9621 and NGK 93802, among others listed above.