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Subaru 23770AA070 Genuine Drive Belt Idler Pulley

Name: Subaru 23770AA070 Genuine Drive Belt Idler Pulley
Brand: globalsautoparts.com
Price: 47.99 USD
Availability: OutOfStock

$47.99 USD

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✔ Subaru 23770AA070 Drive Belt Idler Pulley — Genuine OEM Part
✔ Fitment: 2.0L & 2.5L H4 engines (FA, FB, EJ) in Subaru BRZ, Crosstrek, Forester, Impreza, WRX, and other select models
✔ Direct replacement for factory idler pulley — no modifications required
✔ Manufactured to Subaru's original specifications and tolerances
✔ High‑quality bearing and pulley design — ensures smooth, reliable belt operation
✔ Essential component of the accessory drive belt system

Subaru 23770AA070 Genuine Drive Belt Idler Pulley — for 2.0L & 2.5L H4 Engines

A squeaking or squealing noise from the accessory belt, visible belt wear or cracking, a loose or slipping belt, or a battery/alternator warning light — these are common signs that your drive belt idler pulley may need replacement. The idler pulley maintains proper tension on the accessory drive belt, ensuring it stays in place and operates smoothly. A worn or damaged pulley can cause belt slippage, reduced performance, and potential damage to other accessories. Replacing it with this genuine Subaru part restores proper belt tension and reliable operation.

This is a factory‑original Subaru drive belt idler pulley (OE part number 23770AA070), designed for Subaru 2.0L and 2.5L H4 engines. It features a high‑quality bearing and a precision‑machined pulley surface that ensures smooth belt rotation and long service life. The pulley is a direct fit for the factory accessory drive system and requires no modifications. This is the same part sold at Subaru dealerships.

When to Replace

When to Replace (Common Symptoms)
• Squeaking or squealing noise from the accessory belt
• Visible belt wear, cracking, or fraying
• Loose or slipping accessory belt
• Battery or alternator warning light
• The pulley is noisy or does not spin smoothly
• The bearing is worn, rough, or seized
• The pulley surface is cracked or damaged

Product Details & Highlights

Product Highlights
• ✔ Genuine Subaru OEM — not an aftermarket or Chinese replica
• ✔ Precision‑machined pulley surface — ensures smooth belt operation
• ✔ Sealed bearing — protects against dirt and moisture
• ✔ Direct replacement — bolts into factory location
• ✔ Durable construction — withstands high engine bay temperatures
• ✔ Backed by Subaru’s manufacturer warranty (valid through any authorized dealer)

Package Contents

Package Contents
• 1 × Subaru 23770AA070 drive belt idler pulley (genuine)

FAQ

Is this a genuine Subaru part or a copy?
This is 100% genuine Subaru OEM — in original factory packaging with Subaru part number printed on the label. It is not an aftermarket brand or a replica.

Does this fit my 2015 Subaru Impreza with the 2.0L FB engine?
Yes — the 2015 Impreza with the FB engine uses this idler pulley. We recommend verifying with your VIN.

Does this fit my 2018 Subaru Forester with the 2.5L FB engine?
Yes — the 2018 Forester with the FB engine uses this pulley. Please verify with your VIN.

Does this fit my 2019 Subaru Crosstrek with the 2.0L FA engine?
Yes — the 2019 Crosstrek with the FA engine uses this pulley. Please verify with your VIN.

Can I reuse the old pulley?
If the pulley spins smoothly and the bearing is not noisy, it can be reused. However, we recommend replacing it if the bearing is rough, the pulley surface is worn, or the pulley is damaged.

What is the torque spec for installation?
The typical torque spec for the mounting bolt is 30–40 Nm. Always refer to your vehicle’s service manual for the exact specification.

Does this pulley fit the Subaru BRZ?
Yes — the BRZ with the FA20 engine uses this pulley. Please verify with your VIN.

Does this pulley fit the Subaru WRX?
Yes — the WRX with the FA20 or FA24 engine uses this pulley. Please verify with your VIN.

Is this the same pulley used on the Subaru Forester?
Yes — the Forester uses the same pulley. Please verify with your VIN.

Does this pulley come with a mounting bolt?
No — the mounting bolt is a separate part and is not included. It can be purchased separately if needed.

Does this pulley fit the 2013 Subaru Crosstrek?
Yes — the 2013 Crosstrek with the FB engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2012 Subaru Impreza?
Yes — the 2012 Impreza with the FB or EJ engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2017 Subaru Forester?
Yes — the 2017 Forester with the FB engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2020 Subaru WRX?
Yes — the 2020 WRX with the FA engine uses this pulley. Please verify with your VIN.

Does this pulley come with a warranty?
Yes — this pulley is backed by Subaru's manufacturer warranty. For claims, please contact your nearest Subaru authorized dealer.

Can I install this pulley myself?
Yes — it is a straightforward bolt‑on replacement. However, we recommend consulting your vehicle’s service manual for the correct installation procedure.

Does this pulley fit the 2014 Subaru Forester?
Yes — the 2014 Forester with the FB engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2016 Subaru Crosstrek?
Yes — the 2016 Crosstrek with the FB engine uses this pulley. Please verify with your VIN.

Is this pulley the same as the one used on the Subaru Outback?
No — the Outback uses a different idler pulley. This pulley is specifically for BRZ, Crosstrek, Forester, Impreza, and WRX.

Does this pulley fit the 2021 Subaru Impreza?
Yes — the 2021 Impreza with the FA engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2014 Subaru BRZ?
Yes — the 2014 BRZ with the FA20 engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2023 Subaru WRX?
Yes — the 2023 WRX with the FA24 engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2011 Subaru Impreza?
Yes — the 2011 Impreza with the FB engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2016 Subaru WRX?
Yes — the 2016 WRX with the FA20 engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2022 Subaru BRZ?
Yes — the 2022 BRZ with the FA24 engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2015 Subaru Crosstrek?
Yes — the 2015 Crosstrek with the FB engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2013 Subaru Forester?
Yes — the 2013 Forester with the FB engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2024 Subaru WRX?
Yes — the 2024 WRX with the FA24 engine uses this pulley. Please verify with your VIN.

Does this pulley fit the 2010 Subaru Forester?
No — the 2010 Forester uses a different pulley part number. This is for 2011 and newer models.

View full details

Subaru 23770AA070 Drive Belt Idler Pulley

OEM Part Numbers
• 23770AA070

Vehicle Fitment Table (OEM Compatibility)

Brand	Model	Engine	Years	Notes
Subaru	BRZ	FA20 (2.0L)	2013–2025	All trims
Subaru	Crosstrek	FB / FA (2.0L / 2.5L)	2013–2025	All trims
Subaru	Forester	FB / FA (2.5L)	2011–2025	All trims
Subaru	Impreza	FB / FA (2.0L / 2.5L)	2011–2025	All trims
Subaru	WRX	FA20 / FA24 (2.0L / 2.5L)	2012–2025	All trims

⚠️ Important Fitment Notes:

• Always verify by VIN – Fitment is determined by the specific engine code and accessory drive layout. Confirm your application before ordering.

• Direct replacement – This pulley bolts directly into the factory location. No modifications or adapters are needed.

• High‑quality bearing – The pulley features a precision‑sealed bearing for long service life.

• Belt alignment – The pulley is designed to maintain correct belt alignment for optimal performance.

• Genuine Subaru quality – This is an OEM part, not an aftermarket or Chinese replica.

• Double‑check your original part – Before ordering, confirm the part number stamped on your old pulley or run your VIN through a Subaru OEM parts catalog for absolute certainty.

Condition
New (100% genuine Subaru packaging)

Product Type
Drive Belt Idler Pulley (accessory belt idler pulley)

Function
The idler pulley maintains proper tension on the accessory drive belt, ensuring it stays in place and operates smoothly. It helps drive the alternator, power steering pump, air conditioning compressor, and other accessories.

Applications
This idler pulley fits Subaru 2.0L and 2.5L H4 engines (FA, FB, EJ) in BRZ, Crosstrek, Forester, Impreza, and WRX from approximately 2011 through 2025.

Important: This pulley is designed for specific Subaru engines and accessory drive systems. It is not compatible with other brands or engine configurations. If in doubt, send us your VIN before ordering.

Technical Specifications

Parameter	Specification
Brand	Subaru (Genuine OEM)
Part Number	23770AA070
Seller SKU	SUBARU_23770AA070
Type	Drive belt idler pulley
Engine Family	FA / FB / EJ (2.0L / 2.5L H4)
Bearing	Sealed (maintenance-free)
Material	High-strength metal with precision-machined surface
Application	Accessory drive belt system
Condition	New (factory original)

Warranty
Subaru's original manufacturer warranty applies. For claims, please contact your nearest Subaru authorized dealer with your proof of purchase. Warranty terms may vary by region — contact us before purchase if you need a warranty confirmation.