SZKAIDAG Belt Tensioner Assembly with 70mm Pulley for Honda Civic 2007–2011 — Direct-Fit, Sealed Bearing

This complete tensioner and pulley unit replaces worn factory parts to keep the V-ribbed serpentine belt aligned and under correct load. Built with a torsional coil spring and precision bearing, the assembly transfers drive power to the alternator, power steering pump, and air conditioning while minimizing noise and vibration. SZKAIDAG applies multi-stage quality checks and automotive-grade materials to meet OE fit, form, and function.

How does this tensioner restore accessory drive performance?

The assembly uses a torsional round spring to maintain consistent belt tension under varying engine loads, helping prevent slippage and accessory malfunction. A sealed bearing and a 70 mm pulley diameter provide smooth rotation and long service life.

• Direct replacement for Honda Civic 1.8L (2007–2011) applications
• 70 mm pulley diameter with 17 mm bearing bore ensures correct belt tracking
• Torsional spring design offers steady, automatic tensioning
• Precision manufacturing reduces operational noise and vibration

What specs and OEM numbers confirm compatibility?

Check the listed OE reference numbers and the pulley dimensions to confirm this part matches your vehicle. SZKAIDAG lists multiple equivalent OEM numbers, making it easier to identify the correct replacement for common Civic service codes.

• Fits Honda Civic 1.8L L4, model years 2007–2011
• OEM cross-references: 39077, 31170RWK005, 31170RWK015, 31170RWK025, 31170RWK035
• Other references: 419-380, 534031610, 89600 for additional verification
• Pulley width 30.6 mm and bearing bore 17 mm match OE dimensions

How durable is the SZKAIDAG assembly and what testing is done?

Manufactured using high-grade materials, the tensioner is engineered to resist vibration, temperature change, and moisture for extended service life. SZKAIDAG enforces strict quality control throughout production with multiple inspections to meet or exceed original equipment standards.

• Multi-step QC checks during production and before shipment
• Robust construction to withstand harsh engine conditions
• Sealed bearing and corrosion-resistant surfaces for longevity
• Designed to reduce noise and maintain stable belt tension

When should I plan to replace the belt tensioner?

Replace the tensioner if you notice belt squeal, engine vibration, or reduced performance from accessories like the alternator or A/C. Visual wear, a misaligned pulley, or unusual noises during acceleration are common indicators a replacement is needed.

• Engine shaking or increased vibration under load
• Unusual noise when accelerating or at idle
• Accessory failures or intermittent charging issues
• Visible pulley wear or belt tracking problems

Who is this product for: This SZKAIDAG Belt Tensioner Assembly is aimed at DIY mechanics, independent repair shops, and fleet maintenance teams working on Honda Civic 1.8L models from 2007–2011 who need a reliable, OE-style replacement. It’s also suitable for anyone replacing a failing tensioner to restore belt alignment and accessory performance, and for technicians who require clear OEM cross-reference numbers or VIN-based compatibility assistance.