Engines and Components› Engines, Blocks and Components

Acura (JDM Import)

Acura 2.4L Long Block Engine

$1,199.00

SKU: K24A-RBB

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The Acura K24A-RBB engine is a 2.4L, 4-cylinder motor designed for 2004-2008 Acura TSX models. This Japanese Domestic Market (JDM) engine comes with under 50,000 miles and is backed by a 90-day warranty. It is recommended to use this engine as a long block and retain your vehicle's original accessories, such as the intake, exhaust manifolds, alternator, power steering, and AC components.
Show original supplier description
This Japanese Domestic Market (JDM) Acura K24A-RBB engine is a 2.4L, 4-cylinder powerhouse designed to be compatible with 2004, 2005, 2006, 2007, and 2008 Acura TSX models. This specific unit has low mileage, typically ranging from under 50,000 miles to 60,000 miles, and comes with a 90-day warranty. The engine is sold as a long block, meaning you should retain and transfer all your vehicle's original accessories, including the intake, exhaust manifolds, alternator, power steering pump, and air conditioning components. This K24A-RBB engine is characterized by its RBB stamp on the cylinder head, indicating it's a performance-oriented variant featuring 3-lobe VTEC cams, contributing to its i-VTEC capabilities. It is a genuine JDM import, ensuring authentic specifications. The engine has been compression tested and is offered with insured shipping to ensure it arrives in good condition. When installing this engine, it is crucial to use the original USDM transmission sensors and solenoids, as the JDM transmission may not function correctly without them. Additionally, for engines driven by a timing belt, it is mandatory to install a new timing belt and any applicable tensioner or idler pulley at the time of installation. Failure to adhere to these installation requirements will void the warranty. The warranty covers internal engine failures such as rod knock, cracked blocks, and internal component failures. However, it explicitly excludes external accessories and sensors (alternator, power steering, turbo, etc.), as these are provided as a courtesy. The warranty also does not cover tune-ups, adjustments, filters, hoses, belts, lubricants, coolants, spark plugs, deterioration, pre-ignition damage, or any issues arising from overheating, improper installation, modification, or abuse. Labor charges for removal and installation are not covered. All sales are final, with exchanges or refunds only offered if the part is defective and unavailable in stock.
Vehicle Symptoms
  • Engine knocking or ticking noises
  • Excessive oil consumption with blue smoke
  • Loss of power and rough running
  • Check engine light with misfire codes
  • Overheating and coolant loss
Diagnostic Codes
  • P0300 - Random misfire detected
  • P0301 - Cylinder 1 misfire
  • P0302 - Cylinder 2 misfire
  • P0303 - Cylinder 3 misfire
  • P0304 - Cylinder 4 misfire
  • P0420 - Catalyst efficiency below threshold
Relevant Conversations
  • 2005 Acura TSX engine replacement cost
  • K24A2 vs K24A long block differences
  • Acura TSX engine knocking sound fix
  • P0300 misfire on Acura TSX after tune
  • TSX low compression cylinder 2 causes
  • JDM K24A engine for 2006 TSX review
  • Acura TSX oil burning fix long block
  • How to install K24A long block in TSX
  • 2007 TSX engine swap options budget
  • Acura TSX check engine light P0420 fix

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAcura (JDM Import)
Part NumberK24A-RBB
CategoryEngines and Components

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy