Who is the G30-825 G-Series II Turbocharger for?

It suits built 2.0L to 3.5L engines aiming well beyond 500 horsepower. The G30-825 G-Series II Turbocharger uses a 58mm compressor on the G30 turbine, so it needs a strong bottom end, fuel system and calibration. Engines targeting less power will spool faster on the G30-725.

What horsepower does Garrett quote for the G30-825?

Garrett quotes 475 to 825 horsepower on engines from 2.0L to 3.5L. The figure comes from the choke flow of the compressor map and represents potential flywheel horsepower. The 0.83 A/R housing favors response, so most builds on it sit below the top of the range.

What does the 0.83 A/R housing change?

It is the smaller of the two G30-825 turbo housings. Exhaust gas enters the turbine wheel faster, which brings boost on earlier than the 1.01 A/R version. The cost is more back pressure near redline on large or high revving engines, where the 1.01 A/R works better.

Is there a speed limit for this turbo?

Yes. Garrett sets the maximum allowable turbocharger speed for the G30-825 at 140,000 rpm, and use above it is at the risk of the owner. A speed sensor installed in the compressor housing shows shaft speed, and the Garrett sensor kits are sold separately.

Does it come with the actuator and fittings?

Yes. Garrett assembles this G30-825 with the internal wastegate turbine housing and a 0.5 bar actuator calibrated before shipping, and includes an oil restrictor and water fittings. The manifold V-band flange, oil and coolant lines and downpipe are supplied by the installer.

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Description

Garrett G30-825 G-Series II Turbocharger, 0.83 A/R V-Band Internal Wastegate

Garrett’s G30-825 G-Series II Turbocharger with the 0.83 A/R housing pairs a 58mm compressor wheel with the 60mm G30 turbine, delivered complete with a V-band internal wastegate housing and a 0.5 bar actuator. Garrett rates it at 475 to 825 horsepower on 2.0L to 3.5L engines, which places it between the G30-725 and the first-generation G30-900. With the 0.83 A/R housing it suits a built 2.0L to 3.0L engine that wants well over 500 horsepower and still needs usable response. For a stock-internals engine making 400 horsepower it is more turbocharger than needed.

G-Series II Compressor

Garrett redesigned the compressor aerodynamics for G-Series II and quotes up to 10 percent more flow than the first generation at peak pressure ratio and peak turbo speed, with higher efficiency at high flow rates. The housings carry over from the first generation, so an existing G30 owner can move to this core and keep the compressor cover.

Features

58mm compressor inducer, frame reference 5855
0.83 A/R internal wastegate housing with V-band inlet and outlet
Turbine wheel that Garrett states flows 15 to 20 percent more than its GTX turbine

Specifications

Garrett turbo reference: 5855
Compressor inducer and exducer: 58mm and 71mm
Turbine inducer and exducer: 60mm and 55mm
Turbine housing: 0.83 A/R, V-band inlet and outlet
Wastegate actuator: 0.5 bar
Maximum turbocharger speed: 140,000 rpm
Rotation: Standard

What’s Included

G30-825 G-Series II turbocharger with 0.83 A/R internal wastegate housing and actuator
Oil restrictor and water fittings

Applications

The G30-825 G-Series II Turbocharger is not vehicle specific. Garrett sizes it by engine and output:

Engine displacement: 2.0L to 3.5L
Power range: 475 to 825 horsepower (Garrett rating)

Notes

Also offered with a 1.01 A/R housing, and as a super core or CHRA for external wastegate builds
The Garrett speed sensor kit is sold separately
Garrett states that running above 140,000 rpm is at the owner’s risk and can cause damage and premature failure
The calibration must be updated to make use of the extra flow

Frequently Asked Questions

Who is the G30-825 G-Series II Turbocharger for? It suits built 2.0L to 3.5L engines aiming well beyond 500 horsepower. The G30-825 G-Series II Turbocharger uses a 58mm compressor on the G30 turbine, so it needs a strong bottom end, fuel system and calibration. Engines targeting less power will spool faster on the G30-725.
What horsepower does Garrett quote for the G30-825? Garrett quotes 475 to 825 horsepower on engines from 2.0L to 3.5L. The figure comes from the choke flow of the compressor map and represents potential flywheel horsepower. The 0.83 A/R housing favors response, so most builds on it sit below the top of the range.
What does the 0.83 A/R housing change? It is the smaller of the two G30-825 turbo housings. Exhaust gas enters the turbine wheel faster, which brings boost on earlier than the 1.01 A/R version. The cost is more back pressure near redline on large or high revving engines, where the 1.01 A/R works better.
Is there a speed limit for this turbo? Yes. Garrett sets the maximum allowable turbocharger speed for the G30-825 at 140,000 rpm, and use above it is at the risk of the owner. A speed sensor installed in the compressor housing shows shaft speed, and the Garrett sensor kits are sold separately.
Does it come with the actuator and fittings? Yes. Garrett assembles this G30-825 with the internal wastegate turbine housing and a 0.5 bar actuator calibrated before shipping, and includes an oil restrictor and water fittings. The manifold V-band flange, oil and coolant lines and downpipe are supplied by the installer.

About Garrett

Garrett Motion has turbocharged engines since 1955, when its T15 was matched to the Caterpillar D9 crawler, and in 1962 a Garrett turbocharger went into the Oldsmobile Jetfire Turbo Rocket, the first turbocharged production car. Garrett has supplied turbocharging in Formula 1 with Scuderia Ferrari, the FIA World Rally Championship and the 24 Hours of Le Mans. It has operated as a stand-alone company since 2018, and its technology is fitted to around 150 million vehicles worldwide.

Additional Information

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Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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Garrett G30-825 G-Series II Turbocharger, 0.83 A/R V-Band Internal Wastegate [934118-5003S]

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Garrett G30-825 G-Series II Turbocharger, 0.83 A/R V-Band Internal Wastegate

G-Series II Compressor

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About Garrett

Reviews