Product images and videos 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.

Sale

Drivetrain› Manual Transmissions and Components

GearH

02A/02J 5th Gear Set, 0.658 Ratio

Name: 02A/02J 5th Gear Set, 0.658 Ratio
Brand: GearH
SKU: 658gearset

$682.99 $662.50 Save $20.49

SKU: 658gearset

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Aftermarket 5th Gear Set is a .658 ratio upgrade for 02A- and 02J-based transmissions. This gear set provides a solid improvement over the stock .756 TDI 5th gear, offering a typical drop of approximately 450 RPM for enhanced commuting efficiency at speeds around 65-70 MPH.

Show original supplier description

The Aftermarket .658 ratio 5th Gear Set is designed as a significant upgrade for 02A- and 02J-based Volkswagen and Audi transmissions. It replaces the stock .756 TDI 5th gear to offer a more economical cruising experience. This popular upgrade typically results in a drop of around 450 RPM at highway speeds (65-70 MPH), making it an excellent choice for daily commuters seeking better fuel efficiency and a more relaxed driving feel. When replacing your 5th gear, it is recommended to also change the gear oil and transmission seal. For installation, it is crucial to heat the gear to 100ºC both during removal and re-installation to prevent damage. Using blue Loctite® on the small gear pinion shaft is also advised. Vehicles equipped with a BEW engine code may experience a loss of cruise control functionality after this modification unless the vehicle is also paired with a compatible tune that accounts for this change.

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

Brand	GearH
Part Number	658gearset
Category	Drivetrain

5,000+ Trusted brands

1M+ Enthusiasts

5M+ Parts sold

(760) 282-4645 hello@motormia.co

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