S410G 177148 Turbocharger for Caterpillar 3406E C15 C16 | New

S410G 177148 Turbocharger for Caterpillar 3406E C15 C16 14.64L

S410G, GTA470201BS, GT4702

The S410G (part number 177148) is the single stock-replacement turbocharger for the Caterpillar 3406E and C15 14.64L diesel, and it also fits the 3406C and C16. It is a T6 twin-scroll unit with a 75mm compressor wheel and a 1.32 A/R turbine housing, sized to support the 425 to 550HP range these engines run on 5EK, 6NZ and MBN ratings. This is a direct-fit replacement: it bolts to the original mounting and runs the factory boost, so the truck goes back to work without any rework. Our S410G is built new to OEM-spec and balanced before it ships. Because one Cat engine can carry several interchange numbers, we check yours against the engine serial before the order leaves the warehouse. We supply repair shops, fleets and distributors with single units and bulk orders.

Turbo Model

S410G, GTA470201BS, GT4702

OEM / Interchange Numbers

177148, 169227, 170354, 704604-0007, 466445-0018, 466445-0023, 471142-0005

Application

1994-2007 Caterpillar CAT C15 C16 3406E 3406C MT735

Service & Support

1-Year Unlimited-Mileage Warranty
US Stock, Fast Dispatch
Bulk Orders Welcome
White-Label Support
Fully Certified

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FAQ

The S410G 177148 fits the Caterpillar 3406E, 3406C, C15 and C16 14.64L engines from 1994 to 2007, including 5EK and 6NZ rated trucks. Confirm by the number on your current turbo.

These numbers all run the same S410G frame but match different engine builds and ratings. The safest way is to read the part number off your old turbo's nameplate and send it with your engine serial; we cross-reference it to the exact unit.

It is a single stock replacement. It bolts to the factory mounting and runs the original boost, so the engine goes back to its rated power with no rework.

The matching actuator for this unit is 446131-0046. Tell us your application when you order and we confirm whether your turbo ships with the actuator fitted or whether you keep your existing one.

Yes, this S410G is brand new with 100% new components, built to OEM-spec and balanced before dispatch. There is no core charge and nothing to send back. It carries a one-year warranty.

Yes. We hold the S410G in US stock and supply repair shops, fleets and distributors with single units or bulk orders, with pricing built for resale and steady restock.

S410G 177148 Turbocharger: Fitment, Ratings and Install Notes

The 177148 is the workhorse turbo for the 3406E and C15, two of the most common heavy-duty diesels still on the road. Getting the right one comes down to matching your part number and knowing your engine rating.

Engines and ratings it covers

This S410G fits the 14.64L Cat 3406E, 3406C, C15 and C16 from 1994 through 2007, including the common 5EK and 6NZ serial prefixes. The frame is rated for roughly 425 to 550HP, so the same turbo serves trucks set up at different power levels. If you only know the engine model, check the rating and the number on your old turbo, since Cat used several part numbers across these years.

Why the part number matters more than the engine name

A 3406E or C15 can carry 177148, 169227, 170354 or a 704604/466445/471142 series number depending on build and rating. They share the same S410G frame but differ in detail. Reading the number off your old unit and confirming it is the surest way to get a turbo that bolts straight on.

Detail	S410G 177148
Turbo frame	S410G (GTA470201BS / GT4702)
Compressor wheel	~75mm
Turbine housing	1.32 A/R, T6 twin-scroll
Power range	425-550HP
Engines	3406E, 3406C, C15, C16 (14.64L)
Years	1994-2007
Actuator	446131-0046

Signs your 3406E or C15 turbo is worn

Look for slow boost build and lost power under load, dark smoke on acceleration, a new whistle or whine, oil at the compressor or turbine end, and higher exhaust temps. Shaft play you can feel by hand at the wheels means the bearings are gone.

Before you install

On these engines most turbo failures start with the oil supply or with debris pulled through the intake. Before fitting the new S410G, flush and check the oil feed and drain lines, prime the turbo with clean oil, and inspect the intake and charge piping for any metal from the old unit. Sorting the root cause first is what keeps the new turbo alive and the warranty valid. See our quality process for how each unit is tested before dispatch.