Perkins Serial & Model Number Guide
Every Perkins engine carries a model/serial label. Here is where to find it, what each part of the number means, and how to use it for parts, service and age.
What the number means
Worked example — Model 1104C-44TA · Engine No. PJ12345U123456P:
| Part | Meaning | Detail |
|---|---|---|
1104 | Series & cylinders | 1104 = 1100 Series, 4-cylinder. |
C | Generation | Design generation of the series (A, C, D…). |
44 | Displacement | 4.4 litres. |
TA | Aspiration | T = turbocharged, A = aftercooled/intercooled (NA = naturally aspirated). |
PJ12345 | Build list | A SEPARATE 2–4 letter + 4–5 digit code for the exact family/application spec — this is what Perkins needs for the correct parts. |
U | Country of manufacture | The letter before the serial: U = United Kingdom, N = USA. |
123456 | Serial number | The individual engine's 6-digit sequence number. |
P | Year of manufacture | The FINAL letter encodes the build year (Perkins year-letter code). |
Using the serial number
Quote the FULL engine number — build list + country letter + serial + year letter (e.g. PJ12345U123456P). Unlike some makes, Perkins DOES encode the build year: the final single letter is the year of manufacture and the pre-serial letter is the country. The build list (the leading letters+digits, NOT the 1104C-44TA model name) identifies the exact application spec Perkins needs for parts.
Common Perkins maintenance parts
The service parts Perkins's own documents list across more than one engine model. Confirm the number for your unit on its model page or data plate before ordering.
| Part | Part number | Fits | Price |
|---|---|---|---|
| Oil filter | 915155 | 9 Perkins engines | PartsGeek $7.98 NAPA $11.42 |
| Oil filter | 2654A111 | 8 Perkins engines | NAPA $22.21 eBay $23.99 Amazon |
| Fuel filter | OD11917 | 2 Perkins engines | NAPA $11.96 eBay $14.99 Amazon |
| Fuel filter | 26560140 | 2 Perkins engines | eBay $13.26 NAPA $36.94 |
| Air filter | WA11994 | 6 Perkins engines | eBay $114.47 |
| Air filter | 901047 | 4 Perkins engines | NAPA $62.83 |
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Decode rules verified against: Perkins engine identification (b2b.perkins.com) + Foley Engines serial guide. Figures are for reference; confirm against the official documentation for your exact unit.