Marsram Throttle Body for 2006-2008 GM V8s — Direct-Fit Replacement, Reinforced Sensor

Marsram electronic throttle body is a direct-fit replacement designed to restore reliable throttle control for 2006–2008 GM V8 vehicles that use the OE-style electronic throttle assembly.

If your Chevrolet, GMC, Cadillac, Hummer, Isuzu or Saab V8 is showing throttle control faults, lack of throttle response, or engine idle and surge issues, this Marsram assembly is built to the original specifications for a like-for-like swap. It replaces common OEM part numbers (including 12580760, 12679524, 217-2422, 2172422, 12572658) and is made from reinforced materials with an updated internal sensor designed to resist corrosion, heat, and wear.

Which vehicles will this Marsram throttle body fit?

This throttle body fits a wide range of GM and related vehicles from model years 2005–2008 with compatible V8 engines. It covers many Chevrolet, GMC, Cadillac, Isuzu, Hummer, Saab, and Buick applications—check the full compatibility list before ordering.

• Chevrolet: Avalanche, Express, Silverado (1500/2500/3500), Suburban, Tahoe, Trailblazer, SSR (specific years and V8 displacements listed).
• GMC: Envoy, Savana, Sierra, Yukon, Yukon XL (selected years and displacements).
• Cadillac/other: Escalade variants, Isuzu Ascender, Hummer H2/H3, Saab 9-7x, Buick Rainier.
• Confirm fit: use vehicle year, engine size, and "amazon confirmed fit" or VIN lookup before purchase.

How does this throttle body improve reliability compared with older units?

Marsram redesigned the internal electronic sensor and uses reinforced construction to reduce the wear and failure modes common to aging OEM throttle bodies. The improved materials resist heat and corrosion while the updated sensor reduces erratic readings that lead to check-engine lights and drivability issues.

• Reinforced housing for corrosion and thermal resistance.
• Redesigned internal electronics to limit excessive wear.
• Manufactured to match original dimensions for straightforward installation.

What symptoms indicate the throttle body should be replaced?

Replace the throttle body when you see the electronic throttle control warning, rough or unstable idle, stalling, difficulty starting, hesitation under acceleration, or power surging. Those symptoms often point to throttle position sensor (TPS) or idle air control (IAC) issues inside the throttle assembly.

• Electronic throttle control light on the dash.
• Engine stalls, hiccups, or fails to start reliably.
• Hesitation or surging during acceleration.

What’s included and what should I expect during installation?

Each package contains one Marsram electronic throttle body and covers a one-year limited warranty. The unit is intended as a direct replacement, so most installs follow the original mounting points and electrical connector—professional installation or a reliable mechanic is recommended if you’re not experienced.

• Package: one electronic throttle body assembly with standard connector and mounting interface.
• Warranty: 1-year limited coverage from Marsram—keep proof of purchase.
• Installation: typically bolt-on and plug-in; throttle relearn or scan tool may be required after swap.

Who is this for: This Marsram throttle body is for vehicle owners, mechanics, and fleet managers who need an affordable, OE-spec replacement for failing electronic throttle systems on mid-2000s GM V8 platforms and compatible brands. It suits anyone seeking a corrosion-resistant, sensor-improved assembly to restore throttle response and reduce recurring throttle-control faults—confirm model and engine fitment before ordering to ensure a proper match.