Bosch Injectors 550cc – Golf 4 GTI / VAG 1.8T 20VT – 330+ hp

Description

Upgrade your Golf 4 GTI or other VAG 1.8T 20VT engine with this Bosch 550cc injectors – ideal for projects between 240 and 330+ hpThese injectors are supplied with connector adapters and fit perfectly without having to raise or adjust the fuel rail. Designed for even fuel distribution and high reliability, even when using E85 fuel.

Unlike many universal injectors, these Bosch injectors offer 100% OEM fit guaranteeNo shims, no modifications – just plug & play installation with factory quality and excellent flow consistency.

Advantages

• Fit guarantee: fits perfectly on 1.8T / 20VT without adjustment
• High flow capacity up to 550cc/min at 3 bar
• E85 compatible – suitable for alternative fuels
• Double cone-shaped spray for optimal atomization
• USCAR connector including adapter set
• Reliable Bosch quality – OEM production

Technical specifications

• Flow: 547cc/min = 374g/min = 50lb/hr @ 3 bar
• Flow: 632cc/min = 432g/min = 57lb/hr @ 4 bar
• Spray shape: Double cone
• Housing: Standard length
• Nozzle: Regular tip
• Resistance: 12 ohm
• Connector: USCAR (including adapters)
• Fuel compatibility: Gasoline / E85

Compatibility

• Engines: 1.8T / 20VT (all variants with injection rail)
• Vehicles: Golf 4 GTI, Audi TT 8N, Audi A3 8L, SEAT Leon 1M, Skoda Octavia 1.8T, and similar VAG platforms.

Choice of engine codes:
• AGU / AEB: Suitable for early 1.8T's with wide port head.
• Other: For the following engine codes:
AJQ, APP, APX, AMK, BAM, ARZ, AUM, AUQ, AJL, ANB, APU, ARK, AWU, AWW, AWV, AWX, AWD, BEK, BFV, BBU, BEX, BJX, AWM, AMB, ATW, AUG, AWT, BVP, BYP, BGB, BFB, BVC

Important note

NB: Adjusting the engine software at a tuner is mandatory to prevent engine damage.

Contents

• 4x Bosch 550cc injectors (@3 bar)
• 4x Connector adapters (USCAR to OEM)

Frequently Asked Questions

Does the ECU need to be modified during installation?
Yes, software modification by a tuner is mandatory to maintain the correct AFR (Air-Fuel Ratio) and prevent engine damage.

Are these injectors suitable for E85?
Yes, these Bosch injectors are fully E85 compatible and ethanol resistant.

Will this fit without modifications to the fuel rail?
Yes, the length and fit are identical to OEM – no spacers or shims required.

What is the difference between AGU/AEB and Other?
The AGU/AEB injectors are specific to the early wide-port engines, while “Other” includes all later 1.8T 20VT variants including BAM, AMK, AUM and AUQ.

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Item number: JT000003