K03 Turbocharger 7256748 for Doosan D34 Engine – High-Performance Replacement

Product Specifications

Compatible Models

Tired of Turbo Failures on Your Doosan D34 or Bobcat S750? Get the K03 Turbocharger 7256748 Replacement You Can Rely On

Every unplanned turbo failure on a Doosan D34 or Bobcat skid steer means lost billable hours — often $1,200+ per day in rental downtime or job delay penalties. OEM replacements take 3–4 weeks and cost up to 45% more. Worse, counterfeit K03 turbochargers fail within 200 operating hours due to undersized shafts and non-certified bearing assemblies.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This K03 turbocharger is built to match original Doosan 150105-00344 and Bobcat 7256748 performance specs — validated by pre-shipment boost pressure, turbine speed, and oil leakage tests. With 10 years’ experience supplying turbo components globally and 10,000+ SKUs in stock, we deliver verified replacements for engine rebuilds and field repairs — no guesswork, no delays.

Where This Part Works

This K03 turbocharger operates under high-temperature, high-RPM conditions typical in quarry loading, demolition site material handling, and port container stacking — where consistent boost response and thermal stability directly impact fuel efficiency and engine responsiveness. It’s engineered for continuous-duty cycles in Doosan D34-powered equipment and Bobcat loaders running 8–12 hours daily. K03 turbocharger for Doosan D34 74-100 HP ensures stable air-fuel ratio even at partial load — critical for emission compliance and throttle fidelity.

Engineering Details That Matter

The turbine housing is precision-cast from Ni-resist ductile iron (ASTM A439 Type D2), resisting thermal cracking up to 750°C exhaust gas temperatures. The compressor wheel is forged 2618 aluminum alloy with ISO 2107 surface finish (Ra ≤ 0.8 µm), minimizing aerodynamic losses. Journal bearings are sintered bronze with PTFE impregnation (ISO 4382) for dry-start tolerance and oil film retention. Shaft runout is controlled to ≤ 0.02 mm at 100,000 RPM — matching OEM dynamic balance tolerances. All sealing surfaces use Viton® fluoroelastomer O-rings rated to 220°C.

The Real Cost of Wrong Parts

A substandard K03 turbocharger may save $80 upfront but risks catastrophic engine damage: oil coking in the center housing, compressor surge-induced blade fatigue, and uncontrolled boost leading to piston ring land failure. Industry data shows non-certified turbos increase unscheduled D34 engine overhauls by 3.2×. Total cost of ownership (TCO) includes labor ($185/hr avg.), cylinder head replacement ($2,400), and 3-day job stoppage. Our ISO-certified K03 turbocharger replacement delivers 10,000+ hour service life — proven across 120+ countries and aligned with ISO 8573-1 Class 2 compressed air purity standards.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in anti-static vacuum bag with molded EPE foam insert and double-walled corrugated carton
• In-stock items shipped within 2–5 working days after payment confirmation
• Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — all with real-time tracking
• Full shipment visibility from Guangzhou warehouse to your dock or workshop
• MOQ: 1 piece — designed for emergency maintenance and small fleet operators

Get Your K03 Turbocharger Now

Your Doosan D34 or Bobcat loader can’t wait — every hour offline costs revenue and reputation. Send us your machine model, current turbo part number, and required quantity. We’ll reply within 24 hours with a competitive quote and shipping options. First-time buyers may request a sample for bench testing before bulk order.

Frequently Asked Questions