Upgrade and modernize your Mercury or Mercury Racing WH-series carburetors with the Buckshot Racing Bonic Billet Jet Holder Plug Kit—a direct replacement for the original Mercury brass jet holder plug, part number 1395-6025.
Designed to fit a wide range of WH carburetors and V6 outboards, this precision-engineered kit offers superior durability, corrosion resistance, and performance over the outdated OEM plugs.
Each kit includes six (6) CNC-machined jet holder plugs made from 6061-T6 aluminum, anodized for corrosion protection and built to exact OEM specifications. These billet plugs are compatible with all WH-series carburetors including models WH-2, WH-3, WH-7, WH-12, WH-14, WH-15, WH-18, WH-20, WH-21, WH-22, WH-23, WH-26, WH-27, WH-28, WH-29, WH-31, WH-35, WH-38, WH-39, WH-40, WH-46, and WH-48.
The plugs feature precision threads and a clean sealing surface, ensuring a proper fit without leaks. With six plugs per kit, it’s a complete solution for V6 outboard applications running triple or triple-double carb setups.
This plug kit is fully compatible with Mercury and Mercury Racing V6 two-stroke outboards using WH carburetors across all 2.0L, and 2.4L (2.5 Liters where WH carbs have been adapted including APBA USF1, F200, F150, and Texas 2.5-liter. ) platforms. It covers a broad lineup of factory engines, including the Mercury V-135, V-150, V-150 Magnum, V-150 Marathon, V-150 Work, V-150 XR-2, V-150 XR-4, and XR-4 Magnum II.
Also supported are the high-performance Mercury V-175, V-200, 150 XR-2, 150 XR-4 Magnum II, and racing-class models like the SST 120 2.0 Liter, SST-140 2.4 Liter, and S2000 international racing outboards.
From bass boats to tunnel hulls, this billet plug kit provides drop-in compatibility for virtually every WH-equipped outboard in the Mercury performance lineup from the late 1970s through the early 1990s.
In addition to the jet plugs, full WH rebuild gasket kits are available as optional add-ons. These gasket kits include all the necessary seals for complete carburetor restoration and are compatible with Mercury OEM part numbers 1395-6026, 1395-6452, 1395-6452B, and Sierra S18-7005.
Installing these gaskets alongside the billet jet plugs ensures a tight fuel seal and long-term reliability. The kits can be added for a nominal cost, making it easy to refresh the entire carburetor while performing the plug upgrade.
Unlike the original brass plugs, which are prone to corrosion, seizing, thread damage, and deformation, the Buckshot Racing billet plugs offer a slick solution. The 6061-T6 aluminum construction provides excellent corrosion resistance in marine environments.
Each plug is machined to exact tolerances, ensuring smooth installation and a precise fit that maintains jet alignment and float bowl sealing.
Aluminum weighs less than brass, which helps reduce mass on the carburetor assembly. The anodized finish not only adds protection but also provides visual confirmation of installation and quality control.
From a mechanical standpoint, these billet plugs are designed to handle repeated service intervals. Whether you’re tuning your engine regularly or performing seasonal overhauls, the robust design allows for repeated removal and reinstallation without wear or damage to the plug head or threads. The precision-machined drive slots or 1/2" hex features provide a secure grip for tools, minimizing the risk of rounding or slipping during installation.
In terms of value, the Buckshot Racing kit significantly undercuts OEM pricing. A set of six Mercury brass plugs (part #1395-6025) retails for nearly $200, while the billet kit offers a modernized, higher-performing solution at a fraction of the price.
With six plugs included, this kit offers an immediate and cost-effective upgrade path for anyone maintaining, restoring, or racing a WH-carbureted Mercury V6 outboard.
Whether you’re running a stock V-150 or a modified XR-2, rebuilding a vintage V-200, or restoring a rare SST 120 or S2000, this billet jet plug kit gives you a reliable, precision-engineered solution to one of the most failure-prone areas of the Mercury WH carburetor platform.
By replacing worn, corroded, or seized brass plugs with modern billet aluminum components, you can restore fuel delivery precision, eliminate leaks, and protect your engine’s performance for years to come.
This kit is an ideal upgrade for marine mechanics, performance tuners, and vintage outboard enthusiasts alike—offering a no-compromise solution to a common maintenance challenge, while extending the life and performance of one of Mercury’s most iconic fuel systems.
Contact Mike Hill with any questions at +1-714-697-1716 or mike@buckshotracing77.com