10 Electrical bulb & socket parts are listed for the 2011 International Prostar, in 5 part types, covering all 5 engine options (10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged and 15.0L DIESEL). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2011 International Prostar, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. Most of the listed parts are Headlamp Bulb (5 parts), Turn Signal Lamp Bulb (2 parts) and Dome Light Bulb (1 part). The other 2 part types cover the remaining 2 parts.
The 2011 International Prostar was sold with 5 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2011 International Prostar electrical bulb & socket parts are PEAK (4 parts), PHILIPS (3 parts) and SYLVANIA (2 parts), plus 1 more brand.
Each part number listed for the 2011 International Prostar opens a page with every vehicle that part fits.
Dome Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 2112 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the bulbs in the dome lamp. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
One part is listed for the 2011 International Prostar — PHILIPS 2112.
Headlamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 9006 | 🇺🇸 US 🇨🇦 CA | 2 Prong Connector | View on Amazon |
| PEAK Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged, 15.0L DIESEL | 9005 | 🇺🇸 US 🇨🇦 CA | High BeamProfessional Box | View on Amazon |
| PEAK Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged, 15.0L DIESEL | 9006 | 🇺🇸 US 🇨🇦 CA | Bulb Base Type: Right Angle Prefocus P22D | View on Amazon |
| SYLVANIA Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged, 15.0L DIESEL | 9005SZ | 🇺🇸 US 🇨🇦 CA | Silver Star zXe | View on Amazon |
| SYLVANIA Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged, 15.0L DIESEL | 9006SZ | 🇺🇸 US 🇨🇦 CA | Silver Star zXe | View on Amazon |
This table covers the bulbs that light the headlamps. Typical signs include a dark lamp, a flicker over bumps, or a bulb that keeps failing on one side. Avoid touching a halogen capsule. Repeated failure in one socket is usually the socket or ground, not the bulb.
5 Headlamp Bulb parts for the 2011 International Prostar come from 3 brands — PEAK, SYLVANIA and GM GENUINE.
This group includes GM GENUINE 9006 and PEAK 9005 and the remaining parts above.
Map / Reading Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PEAK Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged, 15.0L DIESEL | 2825 | 🇺🇸 US 🇨🇦 CA | Average Rated Life: 750.0 HR | View on Amazon |
This table covers the bulbs in the map / reading lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
One part is listed for the 2011 International Prostar — PEAK 2825.
Side Marker Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PEAK Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged, 15.0L DIESEL | 168 | 🇺🇸 US 🇨🇦 CA | Average Rated Life: 1500.0 HRWattage: 4.9 W | View on Amazon |
This table covers the bulbs in the side-marker lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
One part is listed for the 2011 International Prostar — PEAK 168.
Turn Signal Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 3357NALL | 🇺🇸 US 🇨🇦 CA | Longer LifeNatural Amber | View on Amazon |
| PHILIPS Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 3457NALL | 🇺🇸 US 🇨🇦 CA | Longer LifeNatural Amber | View on Amazon |
This table covers the bulbs in the turn-signal lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
PHILIPS supplies both parts for the 2011 International Prostar.
Listed part numbers: PHILIPS 3357NALL and PHILIPS 3457NALL.
Buying Electrical Bulb & Socket Parts for a 2011 International Prostar
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- Match the engine first. Every electrical bulb & socket 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 bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Headlamp Bulb and Turn Signal Lamp Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2011 International Prostar?
Our catalog currently lists 10 electrical bulb & socket parts for the 2011 International Prostar across 5 subcategories and 4 brands, covering all 5 engine options (10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged and 15.0L DIESEL). Each part is matched to the engine(s) it fits.
Do electrical bulb & socket parts differ between 2011 International Prostar engines?
Yes. Every electrical bulb & socket 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 electrical bulb & socket problems on a 2011 International Prostar?
Common symptoms include a lamp that flickers over bumps, melted or discolored socket plastic, or bulbs that keep failing early on one side. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
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 2011 International Prostar 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 2011 International Prostar?
First match the engine — each row shows which engine(s) the part fits. Then repeated bulb failure in one position usually means a socket or ground problem, not bad bulbs — replace the socket rather than chase it. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2011 International Prostar
Electrical Bulb & Socket Parts for Other International Prostar Years
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