Whiteline Rear Diff Positive Power Kit Inserts – 2000-2009 Subaru Legacy GT / Outback

Whiteline Rear Diff Positive Power Kit Inserts – 2000-2009 Subaru Legacy GT / Outback

Firm Up the Rear Diff Mounts on BH/BP Legacy GT and Outback
The Whiteline KDT927 Rear Differential Positive Power Kit uses polyurethane inserts to fill the void space in the rear differential mount housings on the 2000-2009 Subaru Legacy GT and Outback. This insert approach firms up the differential mounting without requiring removal of the OEM housings — reducing differential movement under hard acceleration and cornering for improved drivetrain precision.

DETAILS

• Polyurethane inserts for rear differential mount positions on BH/BP Legacy/Outback
• Reduces differential movement under acceleration and cornering
• Improves rear axle stability and power delivery precision
• Insert design — no removal of OEM housings required
• Fitment: 2000-2009 Subaru Legacy GT and Outback (BH/BE and BP/BL chassis)

Legacy GT and Outback Differential Mounting
The turbo-powered Legacy GT and Outback XT produce significant drivetrain loads that accelerate rear differential mount wear. The factory rubber mounts allow the differential to shift under these loads — reducing rear axle consistency and producing the drivetrain vagueness common on high-mileage Legacy GT examples.

Insert Approach
The KDT927 fills the void space in the OEM mount housing with polyurethane inserts rather than requiring the housing to be removed. Installation is significantly simpler than full bushing replacement and achieves most of the compliance reduction benefit.

BH/BE and BP/BL Coverage
Both the BH/BE (2000-2004) and BP/BL (2005-2009) Legacy GT and Outback XT have compatible rear differential mount geometry. One insert kit covers the full decade of Legacy GT production on these chassis generations.

Why Choose Whiteline

Whiteline has been engineering suspension components from their facility in Australia since 1979. Every product in their catalog is developed with a clear goal: measurable improvement in handling, stability, and tyre contact. Whiteline’s polyurethane bushings, sway bars, control arms, and alignment correction kits are engineered using finite element analysis and validated on track before they reach the market. Their components are direct-fit, bolt-on solutions designed for enthusiasts who want real performance gains without fabrication or custom work.

The RallySport Take

Effective and easy-to-install rear differential mount improvement for Legacy GT and Outback XT owners. The install is straightforward but doing it correctly matters — clean the housing thoroughly before installation and apply grease to all polyurethane-to-metal contact surfaces. The improvement in drivetrain feel shows up immediately on the first hard acceleration run after installation.

What’s in the Box

• Polyurethane inserts for rear differential mount positions on BH/BP Legacy/Outback
• Reduces differential movement under acceleration and cornering
• Improves rear axle stability and power delivery precision
• Insert design — no removal of OEM housings required

Fitment