1KD ARP Head Studs

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This ARP2000 head stud kit lifts clamping load 8.4 to 19% over the factory 10.9 grade bolts, spreads torque more evenly across the head, and drops straight in with no machining of the block or head. What's Included 8 × Long ARP2000 Studs 10 × Short ARP2000 Studs Washers & Nuts to suit ARP Ultra-Torque assembly lubricant Why ARP2000 Over Factory Bolts? Heavily alloyed martensitic steel, quench hardened and tempered - stud yield strength 11,590 kg 8.4 to 19% more clamping load at around 85% of stud yield strength Clamping load at 170 Nm (75% of yield): 8,636 kg More even, accurate torque distribution than torque-to-yield bolts Reusable if within spec - factory bolts are single use The result on a boosted, fuelled 1KD is simple: a dramatically lower chance of lifting the head or killing a gasket. Fitment Toyota 1KD-FTV 3.0L - Hilux N70, Prado 120/150, HiAce, Fortuner Toyota 2KD-FTV 2.5L Shipping & Payment Free Express Shipping Australia-Wide Buy Now, Pay Later: Afterpay, Humm, Klarna & Zip Frequently Asked Questions Q: Do I need to machine anything? A: No. The studs use the factory head bolt holes in both the block and head. Q: What torque do I run? A: Follow the ARP instructions supplied with the kit using the included Ultra-Torque lube. The 170 Nm figure above corresponds to 75% of stud yield. Q: When should I fit studs? A: Any time the head is off a tuned 1KD. If you're doing a head gasket on a remapped engine, fitting bolts again is a wasted opportunity. ✓ Added to cart! document.addEventListener('DOMContentLoaded', function() { const notification = document.getElementById('cart-notification'); const notificationText = document.getElementById('cart-notification-text'); function showNotification(msg) { notificationText.innerHTML = msg; notification.style.display = 'block'; notification.style.animation = 'slideIn 0.3s ease'; setTimeout(() => { notification.style.animation = 'slideOut 0.3s ease'; setTimeout(() => notification.style.display = 'none', 300); }, 3000); } function updateCartCount() { fetch('/cart.js').then(r => r.json()).then(cart => { const n = cart.item_count; ['.cart-count','#CartCount','[data-cart-count]','.cart-link__bubble','.cart__item-count','#cart-count','.header__cart-count','.cart-count-bubble','[data-header-cart-count]','.site-header__cart-count','#cart-icon-bubble'].forEach(sel => { document.querySelectorAll(sel).forEach(el => { el.textContent = n; el.innerText = n; el.setAttribute('data-cart-count', n); if (n > 0) { el.style.display = ''; el.classList.remove('hide','hidden'); } }); }); document.documentElement.dispatchEvent(new CustomEvent('cart:updated', { detail: { cart } })); if (window.theme && window.theme.cart && window.theme.cart.getCart) window.theme.cart.getCart(); if (typeof window.cartCount !== 'undefined') window.cartCount = n; window.dispatchEvent(new Event('cartchange')); }).catch(() => {}); } function addToCart(variantId, onSuccess, onError) { fetch('/cart/add.js', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ items: [{ id: variantId, quantity: 1 }] }) }).then(r => r.json()).then(onSuccess).catch(onError); } const mainAtc = document.getElementById('main-add-to-cart'); const mainAtcLabel = mainAtc.querySelector('span'); mainAtc.addEventListener('click', function() { if (this.classList.contains('crc-added')) return; const form = document.querySelector('form[action*="/cart/add"]'); if (!form) return; const variantId = new FormData(form).get('id'); mainAtcLabel.innerHTML = 'Adding...'; this.style.opacity = '0.6'; addToCart(variantId, () => { this.classList.add('crc-added'); mainAtcLabel.innerHTML = '\u2713 Added to Cart'; this.style.opacity = '1'; showNotification('\u2713 1KD ARP2000 Head Stud Kit added to cart!'); updateCartCount(); }, () => { mainAtcLabel.innerHTML = 'Add to Cart'; this.style.opacity = '1'; }); }); const mainBuy = document.getElementById('main-checkout'); const mainBuyLabel = mainBuy.querySelector('span'); mainBuy.addEventListener('click', function() { const form = document.querySelector('form[action*="/cart/add"]'); if (!form) return; const variantId = new FormData(form).get('id'); mainBuyLabel.innerHTML = 'Processing...'; this.style.opacity = '0.6'; this.disabled = true; addToCart(variantId, () => { window.location.href = '/checkout'; }, () => { mainBuyLabel.innerHTML = 'Buy Now'; this.style.opacity = '1'; this.disabled = false; alert('Error adding to cart. Please try again.'); }); }); }); Add to CartBuy Now Clamp the Head Like It's a Built Engine ARP2000 head stud kit for 1KD and 2KD with washers, nuts and Ultra-Torque lube. No machining required. Free express shipping Australia-wide. Disclaimer: Common Rail Cowboys is not affiliated with Toyota Motor Corporation or Automotive Racing Products. Engine components require professional installation and correct torque procedure. Show more