Komatsu Excavator Turbocharger Guide: SAA6D107, SAA6D114 & More — OEM Parts | HHX PARTS

Komatsu Excavators: The World’s Most Demanding Turbocharger Application

Komatsu is the world’s second-largest construction equipment manufacturer, with millions of excavators, wheel loaders, bulldozers, and dump trucks operating across every continent. The diesel engines powering these machines — particularly the SAA6D107, SAA6D114, S6D102, and S6D114 series — run at high load factors in some of the most punishing environments on earth: tropical heat, Arctic cold, high-altitude mine sites, and coastal salt air.

In these conditions, the turbocharger is among the first components to reach the end of its service life. Correct replacement specification is critical — fitting the wrong unit, or a low-quality replacement, leads to repeat failures and extended machine downtime.

HHX PARTS manufactures and supplies OEM-grade replacement turbochargers for the full range of Komatsu engine platforms, with factory-direct pricing and the technical depth to match the right unit to every application variant.

Komatsu Engine Family Overview

Komatsu has used both proprietary engines and Cummins-sourced engines across its equipment range over the decades. Understanding which engine powers your machine is the essential first step in turbocharger specification:

OEM Turbocharger Cross-Reference by Engine

SAA6D107 — Komatsu PC200-8 / PC210-8 / PC220-8 / PC270-8

The SAA6D107 is Komatsu’s Tier 4 Interim-compliant 6.7L common rail engine, introduced with the PC200-8 generation. It uses a Holset HX35W turbocharger as original equipment.

SAA6D114 — Komatsu PC300-8 / PC350-8 / WA470

The SAA6D114 powers Komatsu’s mid-size and large excavators and wheel loaders. Higher displacement and boost requirements than the 6D107.

S6D102 / Cummins 6BTA — Komatsu PC200-6 / WA150 / WA200

Older Komatsu models used Cummins 6BTA engines with Holset HX35 turbochargers. These remain in heavy service globally, particularly in Africa, Southeast Asia, and Latin America.

SAA4D95LE — Komatsu PC130-8 / PC138 / PC160-8

Cummins QSB3.3 — Komatsu PC70-8 / PC88MR

Cummins QSK35 — Komatsu PC3000 / PC4000 Mining Shovels

HHX PARTS In-Stock Products for Komatsu Engines

The following turbochargers are available from HHX PARTS for Komatsu excavator and construction equipment applications. Click any product to view specifications and request a quote:

For Komatsu with Komatsu / Holset Turbochargers

• TD04L Turbocharger 49377-01700 / 04272325KZ / 49377-07700 — For Komatsu Excavator PC130-8 / PC138US-8 with SAA4D95LE-5 engine

For Komatsu with Cummins 6BT / 6BTA / 6BTAA Engines

• HX35W Turbocharger 3599725 / 3599727 / 2-911655 — For Komatsu with Cummins 6BTAA / 6BTE / 6B engine
• HX35W Turbocharger 4033072H / 4089954 — For Komatsu Industrial 5.9L with Cummins 6BTAA
• HX35 Turbocharger 4035373 / 3595158 / 3595157 — For Komatsu PC200-6 with Cummins 6B / 6BT / 6BTA / 6BTAA / 6D102 engine
• HX35 Turbocharger 3536338 / 3537020 / 3536339 — For Komatsu WA150 / WA200 with S6D102 engine
• HX30W Turbocharger 3590024 / 3590025 / 6732818062 — For Komatsu Elite / Industrial with Cummins 4BT engine

For Komatsu with Cummins QSB3.3 Engines

• TD04L Turbocharger 49377-01790 / 4944852 — For Komatsu PC70-8 / PC88MR-8 with Cummins QSB3.3 engine

For Komatsu Mining Shovels with Cummins QSK35

• HX83 Turbocharger 5327838 / 2837539 / 4033032 — For Cummins QSK35 in Komatsu PC3000 / PC4000 mining shovels
• HX83 Turbocharger 4033032 / 6241-82-8200 — For Cummins QSK35 Tier 2 in Komatsu mining equipment

Don’t see your part number? Our technical team cross-references the full Komatsu parts catalogue. Send us your machine serial number or OEM turbo part number and we will respond within 24 hours.

Common Applications: Machines We supply For

Hydraulic Excavators

• PC130-8, PC138US-8, PC160-8 — SAA4D95LE / Cummins QSB3.3
• PC200-6 — S6D102 / Cummins 6BTA
• PC200-8, PC210-8K, PC220-8, PC228US-8, PC270-8 — SAA6D107E-1
• PC300-7, PC350-7 — S6D114E-2
• PC300-8, PC350-8, PC360-8 — SAA6D114E-3
• PC3000-6, PC4000-6 Mining Shovels — Cummins QSK35

Wheel Loaders

• WA150-6, WA200-6 — S6D102 / Cummins 6BTA
• WA380-7, WA430-6, WA470-6 — SAA6D114E-3

Motor Graders and Dozers

• GD655, GD675 — SAA6D114 series
• D155AX, D275A — SAA6D140 series

7 Warning Signs Your Komatsu Turbocharger Is Failing

High load factors and long operating hours mean Komatsu turbochargers accumulate wear faster than many on-highway applications. These symptoms require immediate attention:

1. Black smoke under swing and travel load — The most common early symptom on SAA6D107 and SAA6D114 engines. Reduced boost causes rich combustion; visible black smoke under maximum load cycles is a reliable early indicator of turbo performance loss.
2. Slow throttle response — Turbo lag longer than normal during throttle inputs indicates worn compressor or turbine bearings reducing spool speed. On common rail engines, the ECU compensates with fuel enrichment — masking the problem while it worsens.
3. Oil in the air filter housing or charge air cooler — Compressor-side seal failure allows lubrication oil to enter the intake tract. Check the inside of the air filter housing and charge air cooler tubes for an oily residue — a reliable early detection method before full seal failure.
4. Whining or grinding noise from the turbo — Bearing wear on the SAA6D107’s journal bearings produces a characteristic whine that increases with engine RPM and load. Distinguish from normal turbo noise by listening for a change in pitch or the presence of a metallic grinding component.
5. DTC codes for boost deviation — Komatsu’s KOMTRAX telematics system and EMMS (Equipment Management Monitoring System) log boost pressure deviation codes. Codes P0234 (overboost) or P0299 (underboost) indicate turbocharger performance outside specification.
6. Increased engine oil consumption without visible leaks — Oil burning through worn turbo shaft seals enters the intake and combustion system. If the machine is consuming oil between service intervals with no visible external leaks, turbo seal failure is the primary suspect.
7. Turbine housing discoloration or heat cracking — On high-cycle machines operating in hot environments, thermal fatigue causes surface discoloration and hairline cracks on the turbine housing. This accelerates to full failure — inspect the housing during any service involving the exhaust system.

Root Causes Specific to Komatsu Applications

• Dusty environments (Africa, Middle East, Central Asia) — Air filter bypass or inadequate pre-cleaner maintenance allows abrasive particles to destroy the compressor wheel within hundreds of hours. Always inspect and replace air filters before turbocharger replacement.
• Contaminated hydraulic oil cross-contaminating engine oil — On older PC200-6 and PC220-6 models, failed hydraulic system seals can allow hydraulic fluid to enter the engine oil circuit, dramatically reducing its lubricating properties and destroying turbo bearings.
• Short idle cool-down on high-load applications — Excavators in high-cycle applications (quarry, demolition) rarely get adequate cool-down time before shutdown. Oil coking in the turbo feed line is a leading failure cause — consider installing an automatic idle-down timer.
• Water ingestion during deep water crossings — The SAA6D107 air intake routing on some PC200-8 configurations is vulnerable to water ingestion during stream crossings. Water hitting the compressor wheel at high speed causes immediate catastrophic damage.

Specification Checklist Before Ordering

To ensure correct fitment across Komatsu’s complex model range, provide as many of the following as possible when enquiring:

• Machine model and serial number — e.g. PC200-8, serial 80001 onwards
• Engine model and serial number — stamped on the engine data plate
• OEM turbocharger part number — from the turbo data plate or Komatsu parts manual
• Tier level — Tier 3, Tier 4 Interim, or Tier 4 Final (affects turbo mapping and actuator type)
• Market / emissions specification — machines sold in different markets may have different Tier levels for the same model designation

Why HHX PARTS for Komatsu Turbochargers?

• Full Komatsu engine coverage — SAA6D107, SAA6D114, S6D102, S6D114, SAA4D95, plus Cummins-powered Komatsu applications (6BTA, QSB3.3, QSK35)
• OEM cross-reference matching — by Komatsu part number, machine serial number, or engine model
• New units — not remanufactured; fresh components to OEM tolerances, dynamically balanced
• 7-day lead time on stocked variants; 20-day for specialty applications
• Factory-direct pricing — significant savings versus Komatsu dealer or tier-1 distributor pricing
• Global supply — active distribution to construction equipment workshops and dealers in Africa, Southeast Asia, the Middle East, and Europe

Request a Quote for Your Komatsu Turbocharger

Whether you need a single replacement for an urgent breakdown or a bulk order for a Komatsu dealer’s service inventory, HHX PARTS responds within 24 hours with pricing, availability, and fitment confirmation.

• Email: gzlh2022@gmail.com
• Phone / WhatsApp: +86 18170714612
• Website: www.hhxparts.com