This Garrett PowerMax kit replaces both factory MGT1446Z turbochargers with complete direct-fit assemblies. Each turbo comes with a calibrated electric actuator for OE fitment. Compressor flow is 12% higher than the OE turbo, and the kit is rated to support up to 600 hp (estimated) against the 405 hp OE rating. The turbine wheel is MAR-M alloy and the turbine housing is heat-resistant stainless steel, both rated to 980°C.
Specifications
| Type | Direct-fit turbocharger upgrade kit (left and right) |
| Series | PowerMax |
| Turbo Model | MGT1446Z |
| Included | Left turbo 955599-5001S and right turbo 955600-5001S, each with a calibrated electric actuator |
| Compressor Wheel | 36mm inducer, 46mm exducer, 62 trim, 0.52 A/R |
| Compressor Flow | 0.20 kg/s (26 lb/min), 12% above OE |
| Turbine Wheel | 39mm inducer, 36mm exducer, 84 trim, 0.53 A/R, MAR-M alloy |
| Turbine Housing | Heat-resistant stainless steel, rated to 980°C |
| HP Rating | Up to 600 hp (estimated); OE rating 405 hp |
| Replaces | OE turbochargers 883935-0006 (left) and 883937-0006 (right) |
| Fitment Notes | Infiniti Q50 and Q60 with the 3.0L engine, 2017 and later |
| Quantity | 1 kit (2 turbochargers) |
| Part Number | 959783-5001S |
What is included in the kit?
- Both turbochargers, left 955599-5001S and right 955600-5001S, each a complete assembly with a calibrated electric actuator.
Which vehicles does it fit?
- The 2017 and later Infiniti Q50 and Q60 with the 3.0L engine.
How much power does it support?
- It is rated to support up to 600 hp (estimated), compared with 405 hp for the OE turbos.
Is it a direct replacement for the factory turbos?
- Yes. It replaces OE turbochargers 883935-0006 (left) and 883937-0006 (right) as complete direct-fit assemblies.
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
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