Description
Holley Secondary Metering Block Conversion Kit
Upgrade your Holley 4160 vacuum secondary carburettor to a 4150-style layout for precise secondary jet tuning.
Key Features
- ☑ Converts fixed secondary metering plates to replaceable main jet metering blocks
- ☑ Designed specifically for Holley 4160 series carburettors with side-hung float bowls
- ☑ High-durability cast zinc construction with classic gold dichromate finish
- ☑ Complete hardware package includes extended bowl screws, gaskets, and transfer tube
- ☑ Allows track-side air-fuel mixture adjustments on the secondary circuit
Product Overview
The Holley 34-6 Secondary Metering Block Conversion Kit is an essential performance upgrade for motorsport competitors and engine builders seeking total fuel metering control. Factory Model 4160 carburettors utilize a fixed secondary metering plate, limiting fine-tuning capabilities. This kit converts your 4160 carburettor to accept standard replaceable Holley main metering jets, effectively upgrading it to a 4150-style secondary system.
Technical Specifications
| Brand | Holley |
|---|---|
| Part Number | 34-6 |
| Product Type | Secondary Metering Block Conversion Kit |
| Material | Cast Zinc |
| Finish | Gold Dichromate |
| Carburettor Compatibility | Holley Model 4160 with Side-Hung Float Bowls (e.g. 0-1850C) |
| Jets Included | No (Main jets sold separately) |
What’s Included in the Box
- 1x Holley Secondary Metering Block (Gold Dichromate)
- 1x Set of Extended Fuel Bowl Screws
- 1x Fuel Transfer Tube
- 1x Complete Gasket Set (Metering Block & Fuel Bowl Gaskets)
Built to Holley’s uncompromising motorsport standards, the 34-6 kit delivers reliable fuel distribution and precise tuning flexibility. Order from JP Racing today for fast UK dispatch, expert technical assistance, and full back-up support for your engine build.
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