Hybrid Racing

Hybrid Racing K-Series Idler Bracket/Pulley/Belt Combo (HYB-BUN-01-A/B)

Usually ships within 24 hours

$232.73

~~$244.98~~ Sale $232.73

Engine

K20A2/A3/Z1/Z3 & K24A1/A2/A4/A8 (USDM) K24A (JDM)

Crank Pulley Size

5.8" (147mm) 6.25" (159mm) 6.5" (165mm)

Product details

Vendor Hybrid Racing
SKU HYB HYB-BUN-01-A1

Do you have questions about this product?

Ask an expert!

K-Series Idler Bracket/Pulley/Belt Combo by Hybrid Racing

We tackle one of the most common K-Swap issues with a new look and fresh idea. Our idler bracket and pulley kit was designed to take the guesswork out of a reliable belt tensioner system. Most aftermarket setups available today can do the job of getting you up and running, but none take the time to ensure that the serpentine belt system is within the proper tension window. A tight belt means excess wear on all components and a loose belt risks having the belt come off, or slip.

Our solution is simple. Keep the OEM belt tensioner and alternator in place. Our bracket replaces the power steering pump and our guide helps you find the right belt that puts it in the OEM system in the proper tension window. No more worries about your alternator falling, belt walking, or charging issues. We also altered the geometry to save precious room for better hood clearance.

We created two kits for the modern K-Swap. One for pretty much all engines sold in the USA, Japan, and Europe and another kit specifically for the common JDM K24A engine.

HYB-IDB-01-02: This kit will be the most common setup used. Since it fits nearly all of the known K-Series water pump housings and engines it will likely be the most popular. Known to fit the K20A, A2, A3, Z1, Z3, Z4 & K24A1, A2, A4, A8 means you will just need to measure your crank pulley to have a bolt-on solution. This kit requires no modifications to your water pump housing or any other accessory part.

Improved hood clearance saving over 1.5" compared to a stock power steering pulley. It's also .5" shorter than the OEM EP3 idler bracket and pulley.

HYB-IDB-01-04: This kit was specifically designed to fit the JDM K24A engine. This engine was never offered in the USA, however, has become very popular with engine importers. The HYB-IDB-01-04 includes a specific spacer bracket designed to be used on this engine only. From our research, there is no other engine like this in the US, therefore no other OEM option that we have tested worked.

Our kit improves hood clearance by being 1.81" shorter than the factory K24A power steering pump.

How to choose the correct belt:

This kit does not include a belt, however, we do offer a bundle package that can include a belt if you choose. You will need to follow these steps to determine which belt to use on your specific engine.

1. Determine what engine you are using. (K20 or K24)

2. Determine if you are using AC or not.

3. Measure the outside diameter of the crank pulley.

4. Refer to the belt sizing chart to pick the correct size based on which kit you have and the diameter of the crank pulley.

Features

Machined & anodized billet aluminum
JIS 10.9 high-strength steel zinc plated hardware
OEM style pulley
OEM quality bearing

Applications

Fits Most K-Series Engines & K-Series equipped cars.
Does not fit K24Z3 engines.

What's In The Box?

1 - K-Series Idler Bracket/Pulley/Belt Combo Kit

Warranty

Hybrid Racing's Standard Limited Warranty

⚠️ California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm.

The AutoHouse Advantage: Global sourcing power paired with specialized expertise. We utilize an expansive supply network of over 600,000 SKUs to deliver world-class components with an enthusiast’s precision.

Price Match Guarantee:	We are committed to providing the best value. If you find a lower advertised price from a verified vendor, we will match it. Shop with confidence knowing you’re getting the industry's lowest price.
Project Incentives:	We reward enthusiasts who trust us with their major projects. Use these tiered codes at checkout to apply instant savings to your order: • AH25 — $25 OFF $500+ \| • AH60 — $60 OFF $1000+ • AH180 — $180 OFF $3000+ \| • AH400 — $400 OFF $6000+ • AH630 — $630 OFF $9000+
Fitment Guarantee:	Avoid the headache of the wrong part. If you are unsure about compatibility, contact us first. If we verify the fitment for your vehicle via email and it doesn’t fit, we will handle the exchange at no cost to you.
Authorized Retailer:	AutoHouse Supply is an Authorized Retailer for our premier brand partners. We utilize an extensive wholesale network to ensure all 600k+ SKUs in our catalog are 100% genuine, factory-fresh, and sourced through legitimate industry channels.
Warranty Advocacy:	Every product we sell carries its full original manufacturer’s warranty. While warranties are serviced by the brands themselves, we act as your advocate—handling technical details to ensure your claim is processed fairly.
Global Reach:	Leveraging our massive supply chain, we secure hard-to-find components that other shops can't access. Whether it's a standard upgrade or a custom exotic application, we have the network to get it to your door.
Secure Logistics:	High-value performance parts deserve high-level security. We utilize fully encrypted, PCI-compliant checkout and premium, insured carriers to ensure your investment is protected from the moment you click 'Order' until it’s in your hands.

Building something big? If you’re planning a full overhaul or need a custom quote, reach out to our team via our Contact Page.

Precision Support: Whether you are dialing in a daily driver or sourcing components for a high-performance exotic, our team is here to ensure your project stays on track. Use the channels below for sales, technical assistance, or order updates.

Direct Consultation:	For sales inquiries, help applying Project Incentives, or immediate assistance with a new order: (828) 588-5888 Monday – Friday \| 9am – 5pm EST
Technical & Fitment:	To qualify for our Fitment Guarantee, please email your vehicle’s Year, Make, Model, and any existing modifications to: support@autohousesupply.com Our experts will review your specifications and provide written confirmation for your build.
Order Inquiries:	For tracking updates or status inquiries on existing orders, please reach out via our Contact Form. Having your order number ready will allow us to provide the most efficient update.
Global Inquiries:	We proudly support builds across the US, Canada, Mexico, and worldwide. For international shipping quotes or oversized freight logistics, please contact us via the email link above.

Need an immediate answer? Our Live Chat feature (available in the bottom corner) is the fastest way to connect with a representative during business hours.

At AutoHouse Supply, we are enthusiasts first. Our goal is to provide a seamless logistical experience so you can focus on your build. Please see our standard guidelines below.

Secure Shipping:	We offer FREE Ground Shipping within the 48 contiguous United States. Most in-stock orders process within 48 hours. For your security, high-value performance parts require a signature upon delivery to ensure they reach you safely.
Transit Protection:	Please inspect your order immediately. Damage must be reported within 48 hours. For freight/LTL items, if you cannot inspect the contents immediately, please write "Subject to Inspection" on the delivery receipt before signing.
Flexible Returns:	Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
Exclusions:	To ensure every customer receives brand-new, untampered components, parts that have been installed, modified, or used are non-returnable. Custom builds, special orders, and wheel/tire packages are considered final sale.

Need assistance? Reach out via our Contact Form before shipping any items back so we can provide you with an RMA number.

Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.

Verify Your Build:	If this product doesn't list your specific vehicle data, simply reach out to support@autohousesupply.com. We will manually verify compatibility for you.
Our Promise:	When we confirm a fitment in writing and it doesn’t work for your application, we cover the return shipping and exchange it at no cost to you.

Questions? Send us your Year, Make, and Model via our Contact Form and we’ll get you a definitive answer so you can buy with confidence.

Exclusive Savings 👇

The AutoHouse Advantage — The more you buy, the more you save.

Price Match Guarantee

Found a lower advertised price? We’ll match it, guaranteed.

Authorized Retailer

Genuine parts at the industry's best prices.

Fast & Free USA Shipping

We ship worldwide with package consolidation services available.