Fel-Pro Coolant Crossover Pipe Mounting Set ES 73027 — OE-fit, durable seal for GM & Isuzu applications

Fel-Pro ES 73027 is a vehicle-specific mounting set engineered to secure and seal the engine coolant crossover pipe with durable, OE-level materials and precise fit.

This mounting set is part of Fel-Pro’s engineered gasket solutions designed to maintain reliable coolant routing where the crossover pipe meets the engine assembly. Built from application-specific materials and validated to meet original equipment expectations, the set helps preserve sealing performance under the thermal and vibration stresses common to coolant systems. Before installing, confirm exact vehicle compatibility to ensure a correct fit.

What vehicles does the ES 73027 mounting set fit?

ES 73027 is made for specific North American GM and Isuzu models from the early-to-mid 2000s. Compatibility spans multiple model years and trims; always verify the exact year, make, model, engine and trim before ordering to avoid returns.

• Fits: 2003–2006 Isuzu Ascender
• Fits: 2004–2007 Buick Rainier and 2008–2009 Buick LaCrosse/Allure
• Fits: 2002–2014 Cadillac Escalade and Escalade EXT/ESV models across listed years
• Refer to product fit notes or the seller’s confirmed-fit tool for exceptions and qualifiers

How does this mounting set maintain coolant system integrity?

The kit uses application-tailored materials and engineered profiles to recreate the sealing surfaces of the original parts. That targeted design reduces the chance of leaks by compensating for thermal expansion and mechanical movement at the crossover pipe joint.

• Application-specific gasket material resists coolant exposure and heat
• Manufactured to meet or exceed original equipment specifications
• Designed and validated for correct fit, form, and function

What should I check before buying and installing ES 73027?

Confirm vehicle fitment using the year/make/model/engine/trim and review any seller notes or compatibility flags. Inspect mating surfaces and replace any corroded hardware or damaged pipe sections to ensure the new mounting set seals properly.

• Use the seller’s "Confirmed Fit" tool and read any blue-circled notes
• Clean and inspect the crossover pipe flange and engine mating surface
• Replace worn bolts or corroded components before installing the new gasket set

Why choose Fel-Pro ES 73027 over a generic kit?

Fel-Pro focuses on engineered sealing solutions with manufacturing controls to match OE expectations. The ES 73027 set is produced to exacting tolerances with validated performance, reducing the risk of repeat leak repairs compared with non-specific aftermarket parts.

• Proprietary design and manufacturing for consistent gasket geometry
• Validated against OE form, fit and function metrics
• Backed by Fel-Pro’s reputation for specialty sealing products used in professional repairs

Who is this for: technicians and DIYers who need a direct-replacement mounting set for the coolant crossover pipe on specified Isuzu, Buick and Cadillac models. It’s aimed at anyone restoring proper coolant sealing during engine service, pipe replacement, or when addressing coolant leaks at the crossover junction. If your vehicle matches the listed applications and you require a part manufactured to OE-style tolerances, this kit provides a focused, validated option designed for reliable performance.