1409KMT Radiator Core Support Mounting Kit for 1981–1991 Chevy/GMC Trucks & SUVs — Complete Fasteners and Rubber Cushions

1409KMT radiator core support mounting kit supplies the pads, bushings, bolts and spacers needed to mount a replacement radiator core support on 1981–1987 Chevy/GMC trucks and 1981–1991 Blazer, Suburban and dually models.

When replacing a core support, missing or worn mounting hardware can slow a job or produce a misaligned radiator that vibrates or leaks. This complete kit groups the carriage bolts, shims, upper and lower cushions, long spacers, washers and lock/jam nuts into one package so you can reinstall the support correctly without hunting down individual parts. Components are steel and rubber where appropriate for durability and vibration isolation, and the kit is designed to match factory mounting points on the listed Chevy and GMC model years.

Which vehicles does this kit fit?

This mounting kit is made to fit late-model square-body Chevy and GMC trucks plus related SUVs produced in the 1980s and early 1990s. It covers half-ton through one-ton trucks as well as Blazer, Jimmy, Suburban and dually/crew cab variants where the factory core support uses the same mounting arrangement.

• 1981–1987 Chevy Truck C/K and 1981–1987 GMC Truck C/K
• 1981–1991 Chevy Suburban and Chevy/GMC dually/crew cab models
• 1981–1991 Chevy Blazer and 1981–1987 GMC Jimmy

What hardware is included in the kit?

The kit supplies every fastener and cushion piece commonly lost or damaged during core support removal. Items are grouped to let you perform a full replacement without sourcing separate parts from multiple suppliers.

• Carriage bolts, washers, jam nuts and lock nuts
• Upper cushions and lower cushions (rubber isolators) for vibration control
• Offset square-hole shims and long spacers for correct alignment
• All necessary fixing bolts, gaskets and seals where applicable

How does this kit simplify installation and improve reliability?

Using the correct bushings and spacers prevents metal-to-metal contact, reduces radiator vibration and keeps the core support aligned. The steel fasteners provide secure clamping while rubber cushions absorb engine and road vibrations to extend the life of connected parts.

• Pre-matched parts eliminate trial-and-error sizing during reassembly
• Rubber cushions reduce noise and wear compared with missing or degraded mounts
• Complete fastener set avoids delays from missing nuts or bolts

Are these parts new and what warranty/support comes with them?

The components are new, manufactured from steel and rubber to mirror original mounting hardware function. 1409KMT offers a six-month limited warranty and customer support if you encounter fitment or quality questions after purchase.

• Condition: new; materials: steel and rubber
• Six-month warranty with customer assistance available
• Sold as a complete mounting bracket kit for the engine compartment

Who is this for: This kit is intended for DIY mechanics, restoration shops and professional technicians working on 1981–1987 Chevy/GMC square-body trucks or 1981–1991 Blazer, Suburban and dually models who need an all-in-one hardware solution to replace a radiator core support. It’s especially useful during radiator or core support replacement jobs where original fasteners or rubber cushions are missing, damaged, or too worn to reuse. If you value correct alignment, reduced vibration and a tidy reassembly without searching for individual pieces, this kit streamlines the job and helps restore factory-style mounting performance.