GT4702BS Turbocharger for Caterpillar 3406E / C15 Engine
Part Numbers: 704604-7 732915-0001 732915-0003 0R7310 0R7922 0R7923 0R9806 704604-0007 704604-5007S 704604-0003 704604-0006 704604-0011 704604-0013
Boost the performance and reliability of your Caterpillar 3406E or C15 engine with this GT4702BS high-flow turbocharger, engineered to deliver stronger boost, lower fuel consumption, and maximum durability under the harshest operating conditions.
This turbo fits CAT trucks and heavy-duty equipment running the legendary 3406E and C15 engines, providing OE-level performance and long-term stability.
Product Highlights
OE-Grade Replacement Turbocharger
Designed to match the factory specifications of the original Garrett GT4702BS turbo for Caterpillar engines.
High-Flow Compressor & Turbine Design
Delivers stronger boost pressure and improved engine breathing for better pulling power and fuel efficiency.
Built for Extreme Heavy-Duty Use
Manufactured using heat-resistant alloys ideal for long-haul trucking, construction, mining, and oilfield operations.
100% VSR High-Speed Balanced
Ensures smooth turbine rotation, reduced vibration, and extended service life.
Direct Bolt-On Installation
Matches all original mounting points—no modifications required.
Who Is This Turbocharger For?
This turbo is ideal for:
- Owner-operators running CAT 3406E or C15 trucks
- Fleet maintenance managers
- Diesel performance shops
- Heavy equipment repair centers
- CAT engine rebuilders and parts distributors
Anyone needing reliable boost, strong torque, and long service life in demanding environments will benefit from this turbo.
What Problems Does This Turbo Solve?
Many CAT 3406E / C15 engines develop issues such as:
- Power loss during uphill or heavy loads
- Excessive black/white smoke
- Slow turbo spool
- Weak boost pressure
- Increased fuel consumption
- Oil leakage into compressor or turbine housing
- Whining or scraping noise from worn bearings
This GT4702BS turbocharger solves these issues by:
- Restoring full factory boost pressure
- Improving throttle response & torque
- Reducing smoke from better air-fuel mixing
- Enhancing fuel economy
- Preventing oil leaks with upgraded sealing
- Providing high-temperature reliability even under extreme duty cycles
Long-Haul Trucks
Increased torque and boost for improved pulling performance.
Construction Machinery
Stable power delivery for high-load digging and lifting.
Oilfield & Mining Operations
Built to survive hot, dusty, high-vibration work sites.
Heavy-Duty Transport Fleets
Improves engine reliability and reduces downtime.
Installation & Maintenance Guide
Before Installation
- Replace engine oil & oil filter
- Clean or replace air filter
- Ensure oil feed line is free of blockage
- Check intercooler hoses for leaks
- Remove old gasket material
Installation Steps
- Remove the old turbo carefully
- Clean exhaust and intake mounting surfaces
- Prime the new turbo with clean engine oil
- Install turbo and tighten bolts in cross pattern
- Connect all oil, air, and exhaust lines
- Start engine and idle for 3–5 minutes to lubricate turbo
- Inspect for any oil or boost leaks
Post-Installation Tips
- Avoid sudden high RPM for first 20 minutes
- Recheck all connections after first 50–100 km
- Replace oil every 5,000–8,000 km for longest turbo life
FAQ
Q1: Is this turbocharger brand new?
Yes—this is a brand-new unit, not remanufactured.
Q2: Does it fit all CAT 3406E and C15 engines?
Yes, it fits most versions; contact us if you want compatibility confirmation.
Q3: Do you offer wholesale pricing for distributors?
Yes—wholesale and bulk orders are welcome.
Q4: What warranty is included?
12-month manufacturer warranty.
Q5: Do you ship internationally?
Yes—air, sea, and express shipping are available worldwide.
About Us – Fengcheng Zhongke Turbocharger Co., Ltd.
Founded in 2001, Fengcheng Zhongke Turbocharger Co., Ltd. is a professional turbocharger manufacturer specializing in:
- Turbochargers
- CHRA cartridges
- Turbine shafts
- Compressor wheels
- Repair kits
- Turbo accessories
We serve customers covering Cummins, Holset, Garrett, CAT, Komatsu, Volvo, Isuzu, Hino, Mitsubishi, and more.
Why Customers Trust Us
- 20+ years of manufacturing experience
- OE-level production standards
- Full CNC machining centers
- Advanced VSR balancing systems
- Strict quality inspection
- Global export capability
Our mission: Deliver turbochargers with original performance, stable quality, and long-term reliability.
Our Team
Engineering Department
Experts in turbocharger modeling, air-flow simulation, and structural optimization.
Production Team
Technicians with 10–20 years of machining and assembly experience.
Quality Control Team
Implements multi-step inspections to ensure every turbo meets OE standards.
Sales & Support Team
English-speaking professionals offering fast response and technical guidance.
We work together to ensure every customer receives professional, reliable, high-quality service.
Upgrade Your CAT 3406E / C15 Today
Restore full power, reduce fuel consumption, and extend engine life with the premium GT4702BS turbocharger.
