US Perfect Auto Parts & Supplies Inc.
Brand new Caterpillar diesel turbocharger supplied by UPAPSI

Caterpillar Turbocharger

Brand New Replacement Turbochargers for Caterpillar Diesel Engines

US Perfect Auto supplies brand new replacement turbochargers for the full range of Caterpillar diesel engines, including the C7, C12, C13, C15, C16, and the 3406B, 3406C and 3406E. These engines run in on-highway trucks, excavators, wheel loaders, gensets and other industrial equipment, so the correct turbo depends on the exact engine, the serial prefix, and whether the setup is single or two-stage. Every unit ships built to OEM-spec, with the right compressor and turbine wheels and housing A/R for the application. We match the part number against your engine serial before it leaves the warehouse, so it bolts straight on. We supply repair shops, fleets and distributors across North America with single units and bulk orders. To pin down the right unit, use our fitment guide or send your numbers to our team.

  • 100% Brand New
  • OEM-Spec Quality
  • Fully Certified
  • US Stock, Fast Dispatch
  • Direct-Fit Replacement
  • Exact Part-Number Match
  • No Core Charge
  • 1-Year Warranty

Every CAT Turbo Configuration, Verified and In Stock

A Caterpillar turbo is a big-ticket part, and the wrong call costs you twice — once on the part and again on the downtime. We built our Cat program around the things that actually decide whether the job goes smoothly: the unit is new and built to spec, it is the exact match for your engine, it ships fast from US stock, and it is backed if anything goes wrong. Here is what that means for your shop.

C15 and C13 Compound Turbos — HP and LP Sides

The C15 and C13 Acert compound systems run two separate turbos — a high-pressure unit on the manifold and a low-pressure unit behind it. We stock both positions. Each product page states which side it covers, and we confirm the side against your engine serial prefix (BXS, MXS, NXS or SDP) before dispatch.

C7 and C9 Single-Turbo Coverage

The C7 and C9 mid-range engines run a single turbo, and coverage is straightforward: send the part number off the old unit or the engine serial number and we match it. New replacements for the common C7 and C9 applications are held in US stock.

New Units, No Core Deposit Required

Every Cat turbo we ship is built new, with no rebuilt core inside. You skip the core charge, you don't ship an old unit back, and you don't wait on a core credit. For a busy shop that means the part goes on the truck and the job closes the same day. See how this compares on our turbo rebuild vs replace page.

Matched by CAT Part Number and Engine Serial

Cat turbos are engine-specific and often serial-specific. Give us the CAT part number on your old turbo's dataplate, or the engine model and serial number, and we confirm the exact unit before you order — so it bolts straight on.

Compound System Diagnosis Support

On a two-turbo Acert, one failed side does not always mean replacing both. If only the high-pressure or low-pressure unit has failed, you can replace just that side. Tell us the symptoms and fault codes and we help you identify which stage has failed before you order.

Volume Pricing for Fleet and Shop Orders

We hold Cat turbos in US stock and price them for resale, so distributors and shops keep margin and reorder the same unit without long lead times. Single piece or a pallet, the part and the price stay consistent. More on the wholesale page.

C15 and C13 Compound Turbos — HP and LP Sides

The C15 and C13 Acert compound systems run two separate turbos — a high-pressure unit on the manifold and a low-pressure unit behind it. We stock both positions. Each product page states which side it covers, and we confirm the side against your engine serial prefix (BXS, MXS, NXS or SDP) before dispatch.

C7 and C9 Single-Turbo Coverage

The C7 and C9 mid-range engines run a single turbo, and coverage is straightforward: send the part number off the old unit or the engine serial number and we match it. New replacements for the common C7 and C9 applications are held in US stock.

New Units, No Core Deposit Required

Every Cat turbo we ship is built new, with no rebuilt core inside. You skip the core charge, you don't ship an old unit back, and you don't wait on a core credit. For a busy shop that means the part goes on the truck and the job closes the same day. See how this compares on our turbo rebuild vs replace page.

Matched by CAT Part Number and Engine Serial

Cat turbos are engine-specific and often serial-specific. Give us the CAT part number on your old turbo's dataplate, or the engine model and serial number, and we confirm the exact unit before you order — so it bolts straight on.

Compound System Diagnosis Support

On a two-turbo Acert, one failed side does not always mean replacing both. If only the high-pressure or low-pressure unit has failed, you can replace just that side. Tell us the symptoms and fault codes and we help you identify which stage has failed before you order.

Volume Pricing for Fleet and Shop Orders

We hold Cat turbos in US stock and price them for resale, so distributors and shops keep margin and reorder the same unit without long lead times. Single piece or a pallet, the part and the price stay consistent. More on the wholesale page.

A turbo supply line you can build on

WHY CHOOSE US

A turbo supply line you can build on

We stock new Cat turbos in the US and ship them fast, the same way on one unit or a full order. Repair shops, fleets and distributors reorder from us because the fit is right, the price holds, and the supply stays steady. More about our company and quality process.

FAQ

For most heavy-duty Cat engines the turbo itself runs on the engine and the setup. A single-turbo 3406E replacement costs less than a C15 Acert two-stage set, and labor varies by truck. What stays constant: a brand-new replacement carries no core deposit and no return freight, and it prices well below dealer. Send your part number or engine serial and we quote the exact unit from US stock.

Cat turbos are engine-specific and often serial-specific. Give us your engine serial number, the engine model, and the part number on your current turbo. We confirm the exact match before you order so the unit bolts straight on.

Not always. The C15 Acert uses a low-pressure and a high-pressure turbo. If only one has failed, you can replace just that side. Many shops do both when mileage is high since they wear at a similar rate. We supply either position.

All of our Cat turbos are brand new with 100% new components. There is no core charge and nothing to send back, unlike a remanufactured unit. Each is a direct-fit replacement built to OEM-spec with a one-year warranty.

Yes. The 3406B and 3406C are out of production and stock is thin, so we keep new replacements in the US for these older engines. That keeps a 3406 truck, genset or loader from sitting idle while you hunt a discontinued part.

Yes. Most of our customers are repair shops, fleets and parts distributors across the US, Canada and Mexico. We handle single units and bulk orders, with pricing built for resale and steady restock.

How Caterpillar Turbochargers Differ Across Engine Families

Caterpillar built diesels for almost every heavy application, and the turbo setup changes a lot from one family to the next. Knowing where your engine sits makes it easier to order the right unit the first time.

On-highway truck engines: 3406E, C15, C16

The long-haul workhorses. The 3406E and early C15 use a single turbo, while the C15 Acert moved to a two-stage twin-turbo setup to meet emissions while holding power. A 3406E turbo and a C15 Acert turbo are not interchangeable.

Mid-range engines: C7, C9, C12, C13

Used in medium trucks, buses and smaller equipment. Many run variable or wastegated single turbos. The C13 Acert, like the C15, can run a low-pressure and high-pressure pair depending on rating, so the serial prefix matters here too.

Older and industrial blocks: 3406B, 3406C, 3304, 3306

These power gensets, loaders, excavators and older trucks still in daily service. They run simple, robust single turbos with large non-gated housings suited to steady-RPM work. Parts are getting scarce, which is why owners look for quality new replacements rather than waiting on dealer stock.

Single vs two-stage: what to check before ordering

A two-stage Cat engine uses a smaller high-pressure turbo for low-end response and a larger low-pressure turbo for top-end airflow. Each position has its own part number and housing. Knowing only "C15" is not enough — the table shows what decides the part number.

EngineTurbo setupWhat decides the part number
3406B / 3406CSingle, non-gatedHousing A/R and engine rating
3406ESingleRating and year; many interchange numbers
C15 (pre-Acert)SingleEngine serial prefix
C15 AcertTwo-stage (LP + HP)Serial prefix (BXS/MXS/NXS/SDP) and turbo position
C13 AcertSingle or two-stageRating and serial prefix
C7 / C9Single, often VGT/wastegatedEngine model and emissions spec

When you give us the engine serial number and the number on your current turbo, we match all of this before the order ships.

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