Cummins KTA38 Diesel Engine Parts Tube Air Inlet 3630534

The Air Inlet Tube 3630534 is an OEM-engineered component designed for Cummins KTA38 (38L, 1,400–2,300 hp) engines in mining, marine, and power generation applications. As the primary conduit delivering filtered air from the air cleaner to the turbocharger, it ensures stable airflow and protects the engine from contaminants. Constructed from high-strength aluminized steel with a corrosion-resistant coating, it withstands intake temperatures up to 180°F (82°C) and 12 PSI boost pressure while maintaining lightweight durability (2.3 kg).

Structural Integrity

- Aluminized Steel Construction: Combines heat resistance (up to 1,200°F/649°C) with corrosion protection, doubling the lifespan of generic steel tubes.

- Reinforced Bends: Precision-molded 90° and 45° bends minimize airflow turbulence, improving volumetric efficiency by 8%.

- OE-Level Fit: Direct bolt-on replacement for KTA38-G5 engines (2015+ models)-no modifications required.

Airflow Optimization

- Smooth Inner Surface: Micro-polished bore (0.8 µm Ra) reduces air resistance by 15%, enhancing turbocharger response.

- Integrated Clamps: Pre-installed T-bolt clamps ensure leak-free connections at 12 PSI (0.83 bar) boost pressure.

Compliance & Certification

- Meets Cummins' ISO 12500-1 (air intake systems) and SAE J1321 durability standards.

- Matches factory specifications for weight, dimensions, and vibration resistance.

Part Number : 3630534 (Rev A, 2025 formulation)

Compatibility : Cummins KTA38-G5 (2015+) engines

Material : Aluminized steel (1.5 mm wall thickness)

Max Temperature : 180°F (82°C) continuous

Max Boost Pressure : 12 PSI (0.83 bar)

Inner Diameter : 4.5 inches (114.3 mm)

Length : 38.5 inches (978 mm)

Clamps Included : 2× T-bolt clamps (3.5-inch ID)

Weight : 2.3 kg (5.07 lb)

Installation Steps:

1. Torque Sequence: Secure clamps to 15 ± 2 N·m (11 ft-lb) using a calibrated torque wrench.

2. Alignment Check: Ensure ≤1 mm lateral deviation using alignment jig P/N 3975652.

3. Leak Test: Pressurize to 15 PSI (1.03 bar) for 10 minutes-no visible leaks permitted.

Maintenance Schedule:

- Every 500 Hours: Inspect for cracks or corrosion.

- Every 2,000 Hours: Retorque clamps and check for wear.

- Lubrication: Apply anti-seize compound to clamp threads during reinstallation.

*Pro Tip*: Replace the tube if internal corrosion exceeds 0.2 mm depth to prevent airflow restriction and turbocharger surges.