HX55 Turbocharger for Cummins ISM M11 B5.9 – Direct OEM Replacement

Product Specifications

Compatible Models

Tired of Turbo Failures on Your Cummins ISM or M11? Get the HX55 Turbocharger 3590044 Direct OEM Replacement

Every unplanned engine shutdown on a heavy-duty truck or bus costs hundreds to thousands in lost revenue, labor, and penalties. Counterfeit or low-grade turbos fail prematurely—causing oil leaks, loss of boost pressure, and catastrophic engine damage. OEM replacements take 2–4 weeks and cost up to 45% more. And sourcing correct parts across multiple Cummins engine variants—ISM, M11, B5.9—is time-consuming and error-prone.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This HX55 turbocharger meets original Cummins performance specifications for airflow, pressure ratio, and rotational speed. Built by ISO-certified factories and tested pre-shipment for boost response, bearing clearance, and seal integrity. Designed for real-world applications: high-hour highway trucks, transit buses, and regional haulers relying on ISM and M11 engines. With 10 years’ experience supplying turbo components globally, XUNPO stocks over 10,000 engine SKUs—including this HX55 turbo for Cummins—so you avoid downtime waiting for parts.

Where This Part Works

This HX55 turbocharger operates under extreme thermal cycling (up to 750°C exhaust gas) and high-speed rotation (over 120,000 RPM) in demanding environments: long-haul freight routes, municipal bus fleets, mining support vehicles, and construction equipment transporters. Correct fitment ensures stable boost control, prevents compressor surge, and maintains EGR system efficiency—critical for ISM and ISME emissions compliance and fuel economy.

Engineering Details That Matter

The turbine housing is precision-cast from high-nickel ductile iron (ASTM A536 Grade 100-70-03), resisting thermal cracking under repeated load cycles. The compressor wheel is forged from 2618 aluminum alloy and balanced to ISO 1940 G2.5 standards for vibration-free operation at full RPM. Journal bearings use hardened steel shafts with PTFE-coated bronze bushings for low-friction startup and extended life. All internal clearances conform to Cummins service manual tolerances (e.g., shaft endplay ≤ 0.05 mm, radial play ≤ 0.08 mm). Surface finish on the turbine shaft is Ra ≤ 0.4 µm to minimize oil film breakdown and prevent premature bearing wear.

The Real Cost of Wrong Parts

A $120 substandard turbo may save money upfront—but causes $2,800+ in downtime per incident, plus $450+ in labor for reinstallation and diagnostics. Poorly matched HX55 turbo for Cummins units often leak oil into the intake, foul intercoolers, and trigger false DTCs like P0299 (underboost). Replacing it again within 3,000 miles adds cost and erodes fleet reliability. True total cost of ownership includes uptime, fuel penalty (up to 8% higher consumption), and warranty void risk. Our HX55 turbocharger 3590044 direct fit complies with ISO 8573-1 Class 2 air purity standards and passes Cummins-recommended bench testing protocols—ensuring predictable life and no hidden TCO surprises.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in anti-corrosion packaging with vacuum-formed foam insert and double-walled export carton
• In-stock items ship within 2–5 working days after order confirmation
• Flexible logistics: DHL/FedEx/UPS express (3–7 days), air freight (7–12 days), or sea freight (25–40 days)
• Real-time tracking provided via email and WhatsApp upon dispatch
• MOQ is 1 piece—no minimum order required for urgent repairs

Get Your HX55 Turbocharger Now

Your ISM-powered truck or M11-equipped bus can’t wait. Every hour idle means lost revenue and delayed deliveries. Send us your part number (e.g., 3590044), engine model (e.g., ISM330), and quantity—we’ll reply with a competitive quote within 24 hours. First-time buyers can request a sample for validation before bulk order. Stock is available today.

Frequently Asked Questions