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SKU: T131RB | UPC: 770075601364
Gates 84-91 BMW 325/e/es/i/iX/is M20 Performance Timing Belt
The Gates T131RB delivers high-performance timing for BMW M20 engines in 325, 325e, 325es, 325i, 325is, 325iX models from 1984 to 1991, plus select 525i and 528e. Engineered with fiberglass tensile cords and HNBR compound, it maintains precise valve timing at high RPMs while resisting heat, oil, and elongation. Ideal for performance builds needing consistent power transfer.
Key Features
- Fiberglass Tensile Cord: Handles high loads and resists stretching for stable performance during prolonged high-RPM operation
- HNBR Compound: Withstands oil contamination, temperatures up to 300°F, and cracking to extend service life in tough conditions
- Precision Molded Teeth: 132 teeth at 8mm pitch provide exact OEM synchronization and quiet, efficient operation
- 19mm Width Design: Matches M20 engine specs for direct replacement with improved pulley grip
- Nylon Tooth Facing: Reduces friction and wear for smoother tooth engagement and lower noise levels
Product Notes
- Inspect and replace tensioner, idler pulley, and water pump during service for full reliability
- Service interval 60,000 miles or sooner in modified or track applications
- Packaged to prevent contamination and damage during transit
Installation Notes
- Professional installation recommended.
- Requires BMW-specific camshaft locking tool and tension gauge for proper alignment
- Compatible with OEM pulleys, tensioners, and covers, no modifications needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1986-1988 | BMW | 325 | Base |
| 1984-1987 | BMW | 325e | Base |
| 1986-1987 | BMW | 325es | Base |
| 1987-1993 | BMW | 325i | Base |
| 1987-1991 | BMW | 325is | Base |
| 1988-1991 | BMW | 325iX | Base |
| 1989-1990 | BMW | 525i | Base |
| 1982-1988 | BMW | 528e | Base |
Why Choose Gates?
- Over 110 years of belt engineering expertise for automotive and racing
- Proven in motorsports with materials tested for extreme durability
- Exact tolerances match BMW M20 requirements for seamless integration
Frequently Asked Questions
-
Q: Will this fit my 1987 BMW 325i with M20B25 engine?
A: Yes, direct fit for all listed 325 series M20 variants from 1984-1991, including E30 chassis models -
Q: What material construction does it use?
A: HNBR rubber with fiberglass cord and nylon facing for heat, oil, and abrasion resistance -
Q: What warranty coverage applies?
A: Gates provides a limited defect warranty, valid with proper installation and maintenance
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Original Gates box, 12 x 8 x 1.5 inches
- Weight: 0.35 lbs
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