Frequently Asked Questions About International 4700-4900 Windshield Wiper Accessories

Will these wiper arms and blades fit my specific year International 4700 or 4900?

Most windshield wiper accessories in this category are designed to fit International 4700 and 4900 models from 1989 through 2001. However, there were minor changes between model years, particularly in the mounting hardware. We recommend checking your current wiper arm length and mounting style before ordering. The standard wiper arm length for these models is typically 22 inches, but some specialty configurations may vary. If you're unsure, contact our customer service team with your VIN number for exact fitment verification.

What's the difference between standard and heavy-duty wiper motors for these trucks?

Standard wiper motors are rated for typical highway and city driving conditions, while heavy-duty motors offer increased torque and durability for severe weather conditions or frequent use. Heavy-duty motors typically feature sealed bearings, reinforced gear sets, and operate at 50-60 strokes per minute compared to 45-50 for standard motors. If you operate in northern climates with heavy snow or frequently drive in severe weather, the heavy-duty option is worth the additional investment. Both types use the same mounting points and electrical connections.

How difficult is it to replace the wiper linkage assembly on these models?

Replacing the wiper linkage assembly typically takes 2-3 hours for someone with basic mechanical skills. The most challenging part is accessing the linkage under the cowl panel, which requires removing the wiper arms, cowl screen, and sometimes the hood hinges for better access. Common issues include seized pivot points and corroded mounting bolts. You'll need basic hand tools plus a battery disconnect, penetrating oil, and possibly a puller for stubborn wiper arms. Many customers find it helpful to take photos before disassembly to ensure proper reassembly.

Are aftermarket wiper blades as good as OEM for International 4700-4900 trucks?

Quality aftermarket wiper blades from reputable manufacturers like ANCO, Trico, and Bosch often match or exceed OEM performance at a lower price point. The key is selecting the correct blade style - these trucks typically use conventional frame-style blades rather than beam blades due to the high windshield angle and air pressure at highway speeds. Look for blades with natural rubber compounds rather than synthetic for better cold-weather performance and UV resistance. Most drivers report 6-12 months of service life depending on climate and usage.

What causes the intermittent wiper function to stop working while regular speeds still function?

The intermittent function failure while maintaining regular speeds typically indicates a faulty wiper delay module or intermittent relay, not the motor itself. On 1995-2001 models, this module is located behind the dash panel near the wiper switch. Earlier models (1989-1994) use a separate relay in the fuse box. Before replacing components, check for corroded connections at the wiper switch and ensure the ground wire at the motor housing is clean and tight. Replacement modules are available and typically cost less than replacing the entire switch assembly.