LS Alternator Only Bracket - Type 1 Adjustable Idler System for Standard & Electric Water Pumps

Looking for a premium LS alternator only bracket for your next LS swap? The Billet Speed Type 1 LS Alternator Only Bracket System is a complete, American-made solution for mounting your alternator without power steering while maintaining excellent belt wrap and reliable accessory drive performance. CNC-machined from high-strength billet aluminum, this driver side LS alternator bracket positions the alternator high on the engine and uses an adjustable idler pulley to provide optimal belt tension and increased belt contact for improved grip under both street and racing conditions.

Designed for versatility, this LS swap alternator bracket fits virtually all Gen III and Gen IV GM LS engines, including LS1, LS2, LS3, LS6, LS7, LS9, LQ4, LQ9, LY6, LM7, L33, and other 4.8L, 5.3L, 6.0L, and 6.2L applications. The system is compatible with factory mechanical water pumps or electric water pumps and is available for all three common LS crank pulley spacings—Corvette, F-body, and Truck—making it easy to configure for almost any build.

Whether you're building a muscle car, hot rod, C10 truck, Jeep, S10, drift car, off-road vehicle, or custom race car, this high mount LS alternator bracket provides the clearance, strength, and reliability needed for demanding applications. Eliminating unnecessary accessories helps simplify your engine bay while creating additional room for turbochargers, headers, steering components, and custom fabrication. The result is a cleaner engine compartment, improved serviceability, and a professional appearance without sacrificing durability.

Every Billet Speed billet LS alternator bracket is precision engineered, CNC-machined, and manufactured in the USA using premium materials and tight machining tolerances to ensure proper belt alignment, long-term reliability, and an installation that performs as good as it looks. If you're searching for the best LS alternator only bracket or LS accessory bracket for a no power steering setup, the Billet Speed Type 1 system delivers the fit, finish, and performance your LS build deserves.

LS Engine Compatibility

The Billet Speed Type 1 LS Alternator Only Bracket is designed to fit most GM Gen III and Gen IV LS-based engines, including:

• LS1, LS2, LS3, LS6, LS7, LS9, LM7, L33, LR4, LQ4, LQ9, LY6, L92
• Most 4.8L, 5.3L, 6.0L, and 6.2L LS engines

Whether you're installing an LS engine into a classic Chevrolet, C10, Camaro, Chevelle, Nova, Jeep, S10, Fox Body Mustang, or another custom project, this bracket provides a compact, reliable alternator mounting solution.

---

Water Pump Compatibility

The Type 1 system works with:

• Factory mechanical water pumps
• Electric water pump applications.
  

Select idler pulley option when ordering.  The steel or smooth pulley is best for factory water pumps.  The polymer one with flanged sides is recommended for electric water pumps, and the billet aluminum for high horsepower drag racing applications.

---

Crank Pulley & Balancer Compatibility

Proper pulley alignment is critical to belt life and charging performance. The Billet Speed Type 1 system is available for multiple LS accessory drive spacings to match your existing crank pulley and balancer configuration.

Selecting the correct spacing ensures proper alignment between the crankshaft pulley, alternator, and adjustable idler for reliable operation.

Choose from:

• Truck /  5th Gen Camaro  (longest balancer)
• LS1/LS2 Camaro/GTO (medium)
• Corvette / CTS-V (shortest)

If you are unsure what balancer you have, contact us.

---

Alternator Compatibility

The Billet Speed LS Alternator Only Bracket is designed to work with compatible GM alternators specified for your application. Proper alternator selection and pulley alignment help ensure maximum charging performance while maintaining excellent belt tracking.

• Works with the 145 or 160 amp factory LS Truck alternators
• High output 220 or 240 amp truck alternators
• 105 amp LS1 F-Body alternator.
• Fits 99-2005 Truck AD230 (small case)
• any AD244 (large case) [5.46" lug spacing].
• Also Fits 98-02 Camaro CS130 case (5.46")

WILL NOT WORK WITH CORVETTE ALTERNATORS

If you're unsure which alternator or pulley spacing is correct for your build, contact Billet Speed before ordering and we'll help you choose the proper configuration.

---

Why an Adjustable Idler Makes a Difference

A properly designed accessory drive is about more than simply mounting the alternator. The adjustable idler increases belt contact around the alternator pulley, helping to:

• Improve belt grip
• Reduce belt slip at higher RPM
• Increase charging reliability
• Extend belt life
• Allow precise belt tension adjustment

This makes the Type 1 system an excellent choice for high-performance street cars, drag racing applications, autocross, road racing, and off-road vehicles where consistent accessory drive performance matters.

---

Ideal Applications

The Billet Speed LS Alternator Only Bracket is an excellent solution for projects including:

• LS swap conversions
• Street rods
• Classic muscle cars
• C10 trucks
• Jeep LS swaps
• S10 swaps
• Fox Body Mustang conversions
• Drift cars
• Drag cars
• Off-road vehicles
• Sand rails
• Custom chassis builds
• Boats

Its compact driver-side design helps free valuable space in the engine bay while simplifying the front accessory drive.

---

What's Included

Each Billet Speed Type 1 LS Alternator Only Bracket System includes:

• CNC-machined billet aluminum alternator bracket
• Adjustable idler assembly with chosen idler pulley included
• Spacers and mounting hardware for balancer selected

Please verify your engine combination and accessory spacing before ordering to ensure the correct configuration is selected.  The only thing you will need to purchase locally is the 6-rib serpentine belt for your application.

---

Why Choose the Billet Speed LS Alternator Only Bracket?

The Billet Speed Type 1 LS Alternator Only Bracket System is engineered for builders who want a clean, dependable accessory drive without the complexity of a factory power steering system. Whether you're building a street rod, muscle car, truck, race car, off-road vehicle, or custom LS swap, this system delivers exceptional strength, precise belt alignment, and a professional appearance.

Unlike basic alternator brackets, the Billet Speed system incorporates an adjustable idler pulley to maximize belt wrap around the alternator pulley. This helps reduce belt slip at higher engine speeds, improves charging performance, and extends belt life. Precision CNC-machined from billet aluminum and proudly manufactured in the USA, every bracket is built to provide years of reliable service while enhancing the appearance of your engine bay.

---

Frequently Asked Questions

Will this bracket work without power steering?

Yes. The Type 1 system is specifically designed for LS engine builds that eliminate the factory power steering pump while maintaining proper belt routing and alternator performance.

Which LS engines does this bracket fit?

It fits most GM Gen III and Gen IV LS engines, including LS1, LS2, LS3, LS6, LS7, LS9, LM7, LQ4, LQ9, LY6, L92, and many other 4.8L, 5.3L, 6.0L, and 6.2L applications.

Can I use an electric water pump?

Yes. The Type 1 system will work with both factory mechanical water pumps and electric water pumps. Be sure to select the correct pulley option for your engine during ordering.

Can I retain my factory mechanical water pump?

Yes. Factory mechanical water pump applications are fully supported as long as you have the factory tensioner assembly on the passenger side.

Which alternator works with this bracket?

• Works with the 145 or 160 amp factory LS truck alternator
• High output 220 or 240 amp truck alternators
• 105 amp LS1 F-Body alternator.
• Fits 99-2005 Truck AD230 (small case)
• any AD244 (large case) [5.46" lug spacing].
• Also Fits 98-02 Camaro CS130 case (5.46")

Does it come with a belt?

No, you will need to purchase the 6-rib serpentine belt from your local parts store. Factory Water Pumps use a 68.5" long 6-rib drive belt, part number 685K6 or 6PK1740.  If you are using an electric water pump, the belt length is 49.75 or 50" for stock diameter balancers.  Use part numbers 6PK1270 or 6PK1265. These are available at your local auto parts store and they should be able to cross reference the part numbers.

Is this bracket made from billet aluminum?

Yes. Every Billet Speed alternator bracket is precision CNC-machined from high-quality billet aluminum for superior strength, appearance, and durability.

Is this product made in the USA?

Yes. Billet Speed products are proudly designed, machined, and manufactured in the USA.

Why choose an alternator-only bracket?

Removing unnecessary accessories simplifies the front drive system, reduces weight, creates additional room in the engine bay, and provides a clean, professional appearance for performance-oriented builds.

Is this bracket suitable for high-performance applications?

Absolutely. The adjustable idler improves belt wrap and belt stability, making the system ideal for high-RPM street cars, drag racing, autocross, road racing, and other demanding applications.

I don't know which configuration I need. Can you help?

Absolutely. If you're unsure about balancer spacing, water pump type, or alternator compatibility, contact Billet Speed before placing your order. We'll help you select the correct bracket system for your specific LS engine and vehicle.

---

Technical Fitment Details

• The distance from the engine center-line to the outside of the alternator is only 16”.   If you need narrower, see the Type 2 bracket which is 1.5" shorter.
• Motion Raceworks Valve Covers will only work if running a Truck Balancer.
• Important Note: this bracket will not work in a 4th Gen. F-Body Camaro with an ABS Module.   If the ABS module is removed, it will work.
• WILL NOT WORK in a 3rd Gen. Cadillac CTS-V
• Will not work with Huron speed T6 Kit (It hit's the cold side of the turbo)

Important notes about Corvette accessory drive :

• The coolant temperature sensor needs to be relocated to the passenger side head when using the Corvette balancer / accessory drive.
• Corvette spacing will not work with tall aftermarket valve covers.

Installation Instructions