Stellar Automotive Group U540E B2-4 Clutch Bonded Piston fits Toyota Lexus

Stellar Automotive Group U540E B2-4 Clutch Bonded Piston – Compatible for Toyota & Lexus 2005-2018

Fix harsh shifts, slipping in 2nd or 4th, and burnt B2/B4 clutches with this precision bonded B2-4 piston from Stellar Automotive Group.

This direct-replacement piston is machined from durable aluminum with a permanently bonded rubber sealing lip that matches Toyota/Lexus factory specs exactly. Original pistons commonly crack, split, or lose their bond over time, causing internal leakage and destroying the B2 brake band or B4 clutch pack. Installing this upgraded bonded piston during your U540E rebuild restores full apply pressure, delivers smooth and firm 2nd-to-4th transitions, and protects your investment.

Fits popular U540E models including:

• Toyota Tacoma (2005-2015)
• Toyota Highlander & Highlander Hybrid (2008-2018)
• Toyota RAV4 (2006-2012)
• Toyota Sienna (2007-2010)
• Lexus RX330, RX350, RX400h (2004-2009)

Symptoms of a failed B2-4 piston:

• Slipping or flare on 2-3 or 3-4 upshifts
• Harsh engagement into 4th gear
• Burnt B2 band or B4 clutches during teardown
• No or delayed reverse when cold (shared circuit)

Don’t risk another rebuild on a weak piston — choose the Stellar Automotive Group bonded B2-4 piston for leak-free, long-lasting performance.

Note: All parts are distributed, not designed or manufactured, by Stellar Automotive Group.

Add this essential U540E rebuild part to your cart now and shift with confidence!