Product Description
Industrial Injection T34OILIN T3/T4 Oil Inlet Flange is a universal M12×1.5-thread oil feed flange for T3/T4-frame turbos (commonly S300/S400 and Phat Shaft style). Machined aluminum for a reliable seal, and includes mounting hardware and gasket for a clean, leak-free install.
Fitment
- Turbo side: T3/T4-frame oil inlet pattern
- Thread: M12 × 1.5 (turbo oil inlet)
- Commonly used on many S300/S400 & Phat Shaft variants (verify thread on your specific turbo)
What’s Included
- (1) T3/T4 oil inlet flange, aluminum
- (1) Gasket
- Mounting hardware
Recommended Parts (CPP Diesel)
- FLEECE FPE-CRTFL-S3S4 Turbo Oil Feed Line (S300/S400 2nd-Gen location)
- FLEECE FPE-APT-M12-06 M12 Oil Feed Line Fitting + Sealing Washer
- CPP -4AN Turbo Oil Feed Line (Cummins applications)
- Cummins 4940183 OEM Turbo Oil Inlet Supply Fitting (with O-ring)
- Shop All Oil Feed Lines & Fittings
Specifications
| Manufacturer | Industrial Injection |
| Part Number (MPN) | T34OILIN |
| Turbo Frame | T3/T4 oil inlet pattern |
| Thread Size | M12 × 1.5 |
| Material | Aluminum |
| UPC | 840256915938 |
| GTIN (GTIN-12) | 840256915938 |
| Country of Origin | USA (per distributor listings) |
| Prop 65 | Yes — WARNING: Cancer and Reproductive Harm |
Helpful Notes
- Always verify your turbo’s inlet thread. Many S300/S400/Phat Shaft use M12×1.5, but variants exist.
- Use with a quality oil feed line and proper sealing washers to prevent leaks.
FAQ
Will this fit my S300/S400 turbo?In most cases, yes — this flange is for T3/T4-frame turbos with an M12×1.5 inlet. Confirm your turbo’s thread before ordering.
Does it include a gasket and hardware?Yes, listings indicate the gasket and hardware are included for a straightforward install.
What oil feed line should I pair with it?We recommend a high-quality line like Fleece FPE-CRTFL-S3S4 or our CPP -4AN line for Cummins applications.
Is this specific to any truck model?No — it’s a universal turbo-side flange. Fitment depends on your turbo’s frame and inlet thread, not the vehicle.
