71mm compressor wheel, good for over 550whp with proper fuel, upgrades, and tuning!
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71mm compressor wheel, good for over 550whp with proper fuel, upgrades, and tuning!
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Improve throttle response and turbo noise
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Comprehensive kit includes the left & right side RS4 K04 turbochargers, 034Motorsport RS4 Inlet Pipe set, and associated installation hardware
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*2003 and 2004 A6 and Allroad 2.7T's with automatic transmissions have a different downpipe design, and some modification is required for installation.*
APR S3 K04 turbo kit without any software or fuel pump
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For vehicles with FSI engines only
Bolt-On Solution! Plug & Play - Designed to handle 600+HP! Tuning Required.
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Direct turbocharger replacement including a low and high pressure fuel pump upgrade with gains up to 491HP and 425FT-LBS.
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Not legal for sale or use in the state of California.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
06-06-2026
The Turbo Systems hybrid turbocharger is an original turbocharger that has been reworked to suit larger compressor and turbine wheels, along with a ball bearing cartridge.
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+130 HP, and +114lb-ft TQ. 100% Bolt-on installation / Upgrade. You are required to ship Weistec your OE turbochargers as a core.
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You are required to ship Weistec your OE turbochargers as a core.
Based on the original turbocharger but upgraded to new higher output specification.
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World's first truly bolt-on turbo upgrade for MQB vehicles
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Perfect street turbocharger upgrade with fantastic spool and mid-range response
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Based on the original turbocharger but upgraded to new higher output specification.
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Includes the left (K04-025) & right (K04-026) side turbochargers with associated installation hardware
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Does NOT include the RS4 or modified intake pipes necessary for a complete install - For a bolt-on solution, please see 034Motorsport's inlet pipe kit 034-145-P002 (ES2864575).
The biggest issue with the restrictive factory inlet is apparent when you start to increase the power. CTS engineers designed the turbo inlet to be as large as possible; yet still fit perfectly.
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Includes the left (K04-025) & right (K04-026) side turbochargers
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Does NOT include hardware or the RS4/modified intake pipes necessary for a complete install - For a bolt-on solution, please see 034Motorsport's inlet pipe kit 034-145-P002 (ES2864575).
Capable up to 750hp!
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