DAP G2 S363 63/73/12 Billet Turbo

Q: What is the difference between the S364 64/73/12 and the S364 64/68/12?

Both share the same 64.47mm billet compressor, 87.37mm exducer, 82 lbs/minute flow, and 12cm housing. The 64/73/12 uses a larger 73mm Inconel turbine for 600HP. The 64/68/12 uses a 68mm turbine suited for 550HP and high-altitude applications.

Q: Why use a 12cm housing on a 600HP turbo instead of 14cm?

The 12cm housing produces faster spool response. At 600HP with a large 73mm turbine wheel, the 12cm housing keeps spool time competitive without sacrificing top-end flow.

DAP G2 S363 64/73/12 Billet Turbo - 1991.5-2002 Dodge 5.9L Cummins

DAP G2 S300 Billet SXE S364 64/73/12 Turbo | 5.9L Cummins

$1,149.00

Part Number: DAP-G2S3647312G40T3
Est. Ship Time: Contact to Confirm Availability

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Cannot Ship to California or Colorado.
This turbo does not meet CA or CO emissions requirements and cannot be shipped to those states. Orders from CA or CO will be cancelled.

HX40 Exhaust Outlet - Downpipe or Adapter Required.
This turbo uses an HX40 exhaust outlet and will not connect directly to the stock HX35 downpipe. A separate HX40 4" downpipe or HX40-to-HX35 DAP-22445 adapter flange is required. Neither is included. If your application runs a T4 exhaust manifold, you will also need a matching T4 manifold or T3-to-T4 adapter - this turbo has a T3 inlet flange. Confirm your exhaust and manifold plan before ordering.

The DAP-G2S3647312G40T3 is a billet compressor wheel S300-frame turbo built for 1991.5-2002 Dodge Ram 5.9L Cummins trucks targeting 600HP. It combines the largest compressor in the DAP G2 S300 billet lineup - a 64.47mm billet inducer flowing 82 lbs/minute - with the larger 73mm Inconel 713C turbine wheel in a quick-spooling 12cm housing. This is a maximum-output single-turbo upgrade for builds that have fully grown into the top of what the 5.9L Cummins single-turbo platform can produce.

Is This the Right Turbo for Your Build?

Buy this if...

Your truck is a 1991.5-2002 Dodge Ram 5.9L Cummins with a build target at or near 600HP
You need the largest compressor flow in the DAP G2 S300 billet lineup (82 lbs/min) paired with the 73mm turbine for maximum single-turbo output
Your fueling, injectors, and supporting build are already at a level to support this output ceiling
Your exhaust outlet plan is confirmed - downpipe or adapter ordered separately

Do not choose this if...

Your power target is below 550HP - the S364 64/68/12 or S363 configurations are better-matched and will deliver more efficient performance at those levels
You want a daily driver or towing turbo without a heavily modified build supporting it - this is a 600HP-targeted upgrade, not a mild street setup
You want a stock-style replacement with no exhaust or manifold planning required
Your shipping address is in CA or CO

Verify before ordering...

Truck is 1991.5-2002 Dodge Ram 5.9L Cummins
Build target is at or near 600HP and fueling supports that ceiling
Exhaust outlet plan confirmed: HX40 downpipe or HX40-to-HX35 adapter ordered separately
Exhaust manifold confirmed as T3 - if T4, plan for an adapter or manifold swap
Oil inlet application confirmed: included fitting covers 1994-1998 12V or 1998-2018

64/73/12 vs 64/68/12 - The 600HP Choice vs the 550HP Choice

Same compressor, different turbine - here is what that means for your build:
Both the S364 64/73/12 and the S364 64/68/12 use the exact same 64.47mm billet compressor inducer, 87.37mm exducer, and 82 lbs/minute flow rating. Both use a 12cm housing. The split is entirely in the turbine: the 64/73/12 uses a larger 73mm Inconel wheel (79.76mm inducer, 73.37mm exducer) versus the 68mm wheel in the 64/68/12. The 73mm turbine is built for 600HP. The 68mm is the correct match for 550HP and high-altitude applications. If your build is not at the 600HP ceiling, the 64/68/12 will spool more efficiently and serve that range better. The 64/73/12 is the right call only when the build has genuinely reached the top of the 5.9L single-turbo ceiling.

Buy the 64/73/12 for 600HP builds. Stay with the 64/68/12 if your target is 550HP or altitude above 4,000 feet - the 68mm turbine is the correct match for that range and will perform more efficiently there.

Compressor and Turbine Specs

Compressor Wheel

Inducer: 64.47mm
Exducer: 87.37mm
Flow: approximately 82 lbs/minute
Outlet: machined for the 2.91" flange found on 1991.5-2002 Dodge applications
Inlet: 4"

Turbine Wheel

Material: Inconel 713C heat-resistant alloy
Exducer: 73.37mm
Inducer: 79.76mm

Turbine Housing

12cm gated housing

Additional Features

360-degree severe duty thrust bearing
Integrated speed sensor port
Pre-machined boost port
Optimized compressor stage aerodynamics
Adjustable wastegate included

Daily Driving and Towing at 600HP

The 64/73/12 is capable of daily driving and towing in fully built 5.9L Cummins applications. The 73mm Inconel 713C turbine is designed to handle the sustained exhaust temperatures that come with 600HP fueling levels. The 360-degree severe duty thrust bearing provides the oiling support needed for extreme-duty use cycles.

DAP is direct about the towing caveat: heavy towing is possible at this output level, but tire size, gearing, and tuning play a major role alongside exhaust housing selection. At 600HP, this is not a plug-and-play tow upgrade - it is a high-output build component that requires the rest of the drivetrain to match its capability.

Exhaust Outlet and Manifold: Two Things to Confirm

Two fitment points to address before this turbo ships:

Exhaust outlet: HX40 outlet. The stock Cummins uses HX35. Order a 4" HX40 downpipe or an HX40-to-HX35 adapter - neither is included.
Exhaust manifold inlet: This turbo has a T3 inlet flange. If your application runs a T4 manifold, you will need a matching T4 manifold or a T3-to-T4 adapter before installation.

Do not order without confirming both. These are the two most common planning gaps on installs in this configuration.

What Comes in the Box

DAP G2 S300 Billet SXE S364 64/73/12 T3 Gated HX40 turbocharger
Adjustable wastegate (included)
Oil drain bolts
Oil drain seal
Turbo-to-manifold bolts or studs
Compressor o-ring seal
Oil inlet fitting for 1994-1998 12V or 1998-2018 applications

Not included: downpipe, exhaust adapter flange, T4 manifold adapter (if applicable). Order separately before installation.

Fitment Coverage

Fits 1991.5-2002 Dodge Ram 5.9L Cummins. Covers both 12-valve (1991.5-1998) and 24-valve (1998.5-2002) trucks. The compressor outlet is machined specifically for the 2.91" flange found on 1991.5-2002 Dodge applications. Verify your oil inlet: included fitting covers 1994-1998 12V or 1998-2018. T3 inlet flange - T4 manifold applications require an adapter or manifold swap.

Cross Reference Part Numbers

This turbo is comparable to or replaces the following:

13009097055 Borg Warner SXE SX-E

Avoid These Common Mistakes

Choosing the 73mm turbine when the 68mm is the correct match. If your target is 550HP or altitude above 4,000 feet, the S364 64/68/12 is better suited. The 73mm is sized for 600HP - using it below that ceiling means running outside the turbine's efficient operating range.
Ordering without planning the exhaust outlet. The HX40 outlet will not connect to the stock HX35 pipe. Confirm your downpipe or adapter before the turbo ships.
Skipping the T4 manifold check. This turbo has a T3 inlet flange. If your manifold is T4, you need an adapter or manifold swap. This is an easy thing to miss until installation day.
Underestimating the drivetrain demands at 600HP. Tire size, gearing, and tuning are all flagged by DAP as major factors. Confirm the full truck supports this output before treating it as a straightforward bolt-on.
Wrong oil inlet assumption. The included fitting covers 1994-1998 12V or 1998-2018 applications. Verify before ordering.

Before You Place the Order

Truck is 1991.5-2002 Dodge Ram 5.9L Cummins
Build target is at or near 600HP and fueling supports that ceiling
Exhaust outlet confirmed: HX40 downpipe or HX40-to-HX35 adapter ordered separately
Exhaust manifold inlet confirmed as T3 - or T4 adapter planned
Oil inlet application confirmed: 1994-1998 12V or 1998-2018
Shipping address is outside California and Colorado

Checklist confirmed? The DAP-G2S3647312G40T3 is the correct 600HP billet S364 turbo for your 5.9L Cummins build.

Frequently Asked Questions

Click or tap a question below to expand the answer.

What is the difference between the S364 64/73/12 and the S364 64/68/12?

Both turbos share the same 64.47mm billet compressor inducer, 87.37mm exducer, 82 lbs/minute flow, and 12cm housing. The difference is entirely in the turbine. The 64/73/12 uses a larger 73mm Inconel 713C turbine wheel (79.76mm inducer, 73.37mm exducer) and is rated for 600HP. The 64/68/12 uses a 68mm turbine and is best for 550HP and high-altitude applications. If your build is below 600HP, the 64/68/12 is the more efficient choice.

Is the adjustable wastegate included?

Yes. The adjustable wastegate is included with this turbo.

Do I need a new downpipe for this turbo?

Yes. This turbo has an HX40 exhaust outlet, which does not connect to the stock HX35 downpipe. You will need either a separate 4" HX40 downpipe or an HX40-to-HX35 adapter flange. Neither is included with the turbo.

Will this turbo work with a T4 exhaust manifold?

This turbo has a T3 inlet flange. If your application runs a T4 exhaust manifold, you will need either a matching T4 manifold or a T3-to-T4 adapter. Plan for this before ordering.

Why use a 12cm housing on a 600HP turbo instead of 14cm?

The 12cm housing produces faster spool response compared to a 14cm housing. At 600HP with a large 73mm turbine wheel, the 12cm housing keeps spool time competitive without sacrificing top-end flow. Buyers who specifically need a 14cm housing configuration for their exhaust energy setup should confirm which housing suits their build before ordering.

What oil inlet fitting is included?

The included oil inlet fitting covers 1994-1998 12V Cummins or 1998-2018 applications. Verify your application falls within this range before ordering.

How does this compare to the Borg Warner SXE or SX-E?

This turbo is listed as a comparable alternative to the Borg Warner SXE and SX-E (cross-reference 13009097055). The DAP G2 S300 Billet SXE S364 64/73/12 differentiates itself with a billet compressor wheel, 73mm Inconel 713C turbine wheel, 360-degree severe duty thrust bearing, integrated speed sensor port, pre-machined boost port, and an included adjustable wastegate.