Tweco - GAS DIFFUSER - 1540-1115 by TWECO Save -8% $122.82 SKU TWE1540-1115 TWECO - SKU TWE1540-1115 Add accessories to tweco - gas diffuser - 1540-1115. Close Add Your items total will automatically update after adding options or accessories. You can edit your selections in the cart. Select Options & Accessories Quantity Add to cart