{"product_id":"fqranbo-firewall-pass-through-for-holley-terminator-x-max-black-anodized-aluminum-bulkhead-with-1-1-8-3-4-holes","title":"FQRANBO Firewall Pass-Through for Holley Terminator X Max — Black Anodized Aluminium Bulkhead with 1-1\/8\" \u0026 3\/4\" Holes","description":"\u003cp\u003e\u003cstrong\u003eFQRANBO's Firewall Pass Through is a two-piece anodized aluminum bulkhead designed to replace the stock grommet and route your Holley Terminator X Max engine harness cleanly through the firewall.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen installing performance engine management systems like the Holley Terminator X Max, protecting and organizing the wiring that crosses the firewall is critical for longevity and serviceability. This pass-through replaces cramped rubber grommets with a robust aluminum bracket that reduces chafing, resists heat and corrosion, and creates a tidy, repeatable bulkhead entry for your main engine harness.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this pass-through protect my Holley Terminator X Max wiring?\u003c\/h3\u003e\n\u003cp\u003eThe unit uses an arc-shaped harness aperture and a two-piece clamshell design to cradle wiring without sharp edges. Anodized aluminum construction adds thermal and corrosion resistance compared with softer grommet materials. Together these features lower abrasion and strain on the harness at the firewall penetration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eArc-shaped hole reduces cable friction and wear\u003c\/li\u003e\n  \u003cli\u003eTwo-piece bracket clamps the harness gently yet securely\u003c\/li\u003e\n  \u003cli\u003eAnodized aluminum resists heat, rust and corrosion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat size openings and fit dimensions should I expect?\u003c\/h3\u003e\n\u003cp\u003eThe pass-through provides two factory-specified openings to accommodate the main harness and auxiliary lines: a 1 1\/8\" hole and a 3\/4\" hole. Its overall footprint is compact for common firewall locations while offering enough clearance to route the Holley Terminator X Max connector and its bundled wires comfortably.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMain hole diameter: 1 1\/8\" (for primary harness)\u003c\/li\u003e\n  \u003cli\u003eSecondary hole diameter: 3\/4\" (for smaller runs or sensor leads)\u003c\/li\u003e\n  \u003cli\u003eOutside dimensions: 3.78\" × 2 1\/8\" for a low-profile installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is the pass-through installed and secured?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows a straightforward sequence: mount the base plate to the firewall first, route the harness, then fasten the top plate with the included middle bolts. Finally, secure the assembly to the vehicle using the four mounting bolts for a solid, repeatable attachment that makes future service easier.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTwo-piece design uses middle bolts to join upper and lower brackets\u003c\/li\u003e\n  \u003cli\u003eBase plate mounts first, harness laid in, then panels reassembled\u003c\/li\u003e\n  \u003cli\u003eFour outer bolts secure the assembly to the firewall\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose aluminum and what maintenance is needed?\u003c\/h3\u003e\n\u003cp\u003eAluminum provides a strong, lightweight barrier that tolerates engine-bay heat and resists rust better than many steels. The surface is anodized and precision-polished to limit corrosion and help the pass-through hold up under regular use. Maintenance is minimal: inspect for secure fasteners and ensure wiring remains seated in the arc-shaped aperture.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAnodized finish improves corrosion resistance and appearance\u003c\/li\u003e\n  \u003cli\u003ePolished surfaces reduce friction on wires over time\u003c\/li\u003e\n  \u003cli\u003ePeriodic visual checks recommended after track or long drives\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This FQRANBO Firewall Pass Through is aimed at vehicle owners, tuners and installers fitting a Holley Terminator X Max who want a durable, neat firewall entry that eliminates the factory grommet. It’s ideal for performance builds, restorations, or anyone seeking a safer, more serviceable wiring routing solution that reduces chafing and enhances engine-bay organization.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this pass-through fit my Holley Terminator X Max harness?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 1 1\/8\" primary hole and 3\/4\" secondary hole are sized to accommodate the Terminator X Max main harness and smaller leads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tools are needed to install the bulkhead?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Basic hand tools: a socket or wrench set for four mounting bolts and the middle bolts, plus a drill if your firewall needs new holes.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FQRANBO","offers":[{"title":"Default Title","offer_id":55163239235927,"sku":"B0DQ4P5H81","price":31.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/fqranbo-front-view-firewall-pass-through.jpg?v=1790342375","url":"https:\/\/britishgarage.co.uk\/products\/fqranbo-firewall-pass-through-for-holley-terminator-x-max-black-anodized-aluminum-bulkhead-with-1-1-8-3-4-holes","provider":"British Garage","version":"1.0","type":"link"}