35 Ignition parts are listed for the 2021 Alfa Romeo Giulia, in 5 part types, covering both the 2.0L L4 Turbocharged and the 2.9L V6 Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Alfa Romeo Giulia, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. Most of the listed parts are Camshaft Position Sensor (11 parts), Ignition Coil (9 parts) and Crankshaft Position Sensor (8 parts). The other 2 part types cover the remaining 7 parts.
The 2021 Alfa Romeo Giulia was sold with both the 2.0L L4 Turbocharged and the 2.9L V6 Turbocharged. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Alfa Romeo Giulia ignition parts are MOPAR (8 parts), WELLS (5 parts) and WALKER PRODUCTS (4 parts), plus 11 more brands. Quality grades include Standard Replacement, Economy and Premium.
5 parts on this 2021 Alfa Romeo Giulia page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including STANDARD MOTOR PRODUCTS PC748T (Camshaft Position Sensor) and HOLSTEIN 2CRK0800 (Crankshaft Position Sensor). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.0L L4 Turbocharged | PC748T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-Series | View on Amazon |
| HOLSTEIN Fits: 2.0L L4 Turbocharged | 2CAM0368 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| PRENCO Fits: 2.0L L4 Turbocharged | 4E1160 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ULTRA-POWER Fits: 2.0L L4 Turbocharged | 5S8954 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.0L L4 Turbocharged | PC748 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| ASTEMO / HITACHI Fits: 2.0L L4 Turbocharged | CPS0156 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR Fits: 2.0L L4 Turbocharged | 68080819AD | 🇺🇸 US 🇨🇦 CA | Mair so DI Engine with Engine Stop-Start (ESS)Sedan/Quad Cab Short Wheelbase | View on Amazon |
| NTK Fits: 2.0L L4 Turbocharged | EC0339 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS Fits: 2.0L L4 Turbocharged | 2351279 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor Only | View on Amazon |
| WELLS Fits: 2.0L L4 Turbocharged | 5S8954 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 2.9L V6 Turbocharged | 68311580AA | 🇺🇸 US 🇨🇦 CA | Twin PDI Engine with Engine Stop-Start (ESS)Sedan/Quad Cab Short Wheelbase | View on Amazon |
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.
11 Camshaft Position Sensor parts are listed for the 2021 Alfa Romeo Giulia, from STANDARD MOTOR PRODUCTS, MOPAR, HOLSTEIN and 6 other brands. STANDARD MOTOR PRODUCTS PC748T carries the "Popular" badge.
In the Economy grade, STANDARD MOTOR PRODUCTS, HOLSTEIN, PRENCO and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is STANDARD MOTOR PRODUCTS PC748T.
The Standard Replacement section lists 6 options from STANDARD MOTOR PRODUCTS, ASTEMO / HITACHI, MOPAR and 3 other brands — built to original-equipment specification. STANDARD MOTOR PRODUCTS PC748 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Popular Fits: 2.0L L4 Turbocharged | 2CRK0800 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 2.0L L4 Turbocharged | V33720185 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Fits: 2.0L L4 Turbocharged | SS12445 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS Fits: 2.0L L4 Turbocharged | 2351902 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor Only | View on Amazon |
| WELLS Fits: 2.0L L4 Turbocharged | 5S15175 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 2.9L V6 Turbocharged | 68631760AA | 🇺🇸 US 🇨🇦 CA | Twin PDI Engine with Engine Stop-Start (ESS)Sedan/Quad Cab Short Wheelbase | View on Amazon |
| WALKER PRODUCTS Fits: 2.9L V6 Turbocharged | 2351906 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor Only | View on Amazon |
| WELLS Fits: 2.9L V6 Turbocharged | 5S17635 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
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.
8 Crankshaft Position Sensor parts are listed for the 2021 Alfa Romeo Giulia, from WALKER PRODUCTS, WELLS, HOLSTEIN and 3 other brands. HOLSTEIN 2CRK0800 carries the "Popular" badge.
Economy: 2 parts, from HOLSTEIN and VEMO. A representative part number is HOLSTEIN 2CRK0800.
The Standard Replacement section: 3 options from DELPHI, WALKER PRODUCTS and WELLS. DELPHI SS12445 is listed in this group.
3 ungrouped parts are not assigned to a grade, with the same engine-level match.
Listed part numbers: HOLSTEIN 2CRK0800, VEMO V33720185 and DELPHI SS12445, plus the other parts above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRENCO Fits: 2.0L L4 Turbocharged | 368417 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Popular Fits: 2.0L L4 Turbocharged | GN10955 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Popular Fits: 2.0L L4 Turbocharged | 6735205 | 🇺🇸 US 🇨🇦 CA | Direct Ignition Coil or Coil On Plug | View on Amazon |
| NGK Fits: 2.0L L4 Turbocharged | 49633 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged | UF839 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS Fits: 2.0L L4 Turbocharged | 9212375 | 🇺🇸 US 🇨🇦 CA | Single Coil | View on Amazon |
| WELLS Fits: 2.0L L4 Turbocharged | 5C2385 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Fits: 2.9L V6 Turbocharged | 0986221153 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS Fits: 2.9L V6 Turbocharged | 5C2278 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
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.
9 Ignition Coil parts are listed for the 2021 Alfa Romeo Giulia, from WELLS, PRENCO, DELPHI and 5 other brands. DELPHI GN10955 carries the "Popular" badge.
Economy: 1 part, from PRENCO. A representative part number is PRENCO 368417.
The Premium section lists 1 option from DELPHI — a step above OE specification in materials, tolerances or warranty terms. DELPHI GN10955 is listed in this group.
The Standard Replacement section: 5 options from DENSO, NGK, STANDARD MOTOR PRODUCTS and 2 other brands. DENSO 6735205 is listed in this group.
2 ungrouped parts are not assigned to a grade, with the same engine-level match.
This group includes DELPHI GN10955, PRENCO 368417 and DENSO 6735205 and the remaining parts above.
Spark Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 2.0L L4 Turbocharged | 68292346AA | 🇺🇸 US 🇨🇦 CA | Mair so DI Engine with Engine Stop-Start (ESS)Sedan/Quad Cab Short Wheelbase | View on Amazon |
| MOPAR Fits: 2.9L V6 Turbocharged | 68316113AA | 🇺🇸 US 🇨🇦 CA | Twin PDI Engine with Engine Stop-Start (ESS)Sedan/Quad Cab Short Wheelbase | View on Amazon |
| NGK Fits: 2.0L L4 Turbocharged | 90219 | 🇺🇸 US 🇨🇦 CA | Laser IridiumPre-Set Gap: 0.026" | View on Amazon |
| NGK Fits: 2.9L V6 Turbocharged | 96748 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Laser Platinum | View on Amazon |
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.
4 Spark Plug parts for the 2021 Alfa Romeo Giulia come from 2 brands — MOPAR and NGK.
Listed part numbers: MOPAR 68292346AA, MOPAR 68316113AA and NGK 90219, plus the other parts above.
Spark Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 2.0L L4 Turbocharged | 68217569AA | 🇺🇸 US 🇨🇦 CA | Spark Plug Well Gasket | View on Amazon |
| MOPAR Fits: 2.9L V6 Turbocharged | 68332646AA | 🇺🇸 US 🇨🇦 CA | Spark Plug Well Gasket | View on Amazon |
| MOPAR Fits: 2.9L V6 Turbocharged | 68405429AA | 🇺🇸 US 🇨🇦 CA | Spark Plug Well Gasket | View on Amazon |
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.
MOPAR supplies the 3 Spark Plug Gasket parts for the 2021 Alfa Romeo Giulia.
Part numbers include MOPAR 68217569AA, MOPAR 68332646AA and MOPAR 68405429AA.
Buying Ignition Parts for a 2021 Alfa Romeo Giulia
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Match the engine first. Every ignition part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Camshaft Position Sensor and Ignition Coil .
Frequently Asked Questions
How many ignition parts fit the 2021 Alfa Romeo Giulia?
Our catalog currently lists 35 ignition parts for the 2021 Alfa Romeo Giulia across 5 subcategories and 14 brands, covering both the 2.0L L4 Turbocharged and the 2.9L V6 Turbocharged. Each part is matched to the engine(s) it fits.
Do ignition parts differ between 2021 Alfa Romeo Giulia engines?
Yes. Every ignition part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of ignition problems on a 2021 Alfa Romeo Giulia?
Common symptoms include misfires under load, rough idle, flashing check-engine light, or poor starting in damp weather. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What spark-plug gap is listed for the 2021 Alfa Romeo Giulia?
Notes on this page include pre-set gaps of 0.026" and 0.028". Still verify against spec — even “pre-gapped” plugs should be checked before they go in.
What should I replace at the same time?
Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 Alfa Romeo Giulia was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 Alfa Romeo Giulia?
First match the engine — each row shows which engine(s) the part fits. Then gap matters even on “pre-gapped” plugs — verify against spec, and replace coil boots when they come off a high-mileage engine. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Alfa Romeo Giulia
Ignition Parts for Other Alfa Romeo Giulia Years
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