17.5hp Briggs John Deere Riding Mower Engine 1" Shaft Elect Start 31R977 0052 G1 $ 52.21 − 17.5hp Briggs John Deere Riding Mower Engine 1" Shaft Elect Start 31R977 0052 G1 quantity + Add to cart Buy it now Standard Shipping FREE Estimated delivery in 2–3 days. Fast Delivery Get next-day delivery on orders over $50! FREE Spend $50 or more to enjoy free shipping and next-day delivery. Next-Day Eligible