diff --git a/pos/static/js/inventory.js b/pos/static/js/inventory.js
index b16199f..f2ed69c 100644
--- a/pos/static/js/inventory.js
+++ b/pos/static/js/inventory.js
@@ -470,6 +470,77 @@
             html += '<div><span style="font-size:var(--text-caption);color:var(--color-text-muted);text-transform:uppercase;display:block;">Precio 3</span><span class="td--amount">$' + fmt(data.price_3) + '</span></div>';
             html += '</div>';
 
+            // Cross-references section
+            html += '<div style="font-size:var(--text-caption);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:var(--tracking-widest);margin-bottom:8px;">Cross-References / Equivalencias</div>';
+            html += '<div id="crossRefContent" style="margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid var(--color-border);">';
+            html += '<p style="color:var(--color-text-muted);font-size:var(--text-caption);">Cargando equivalencias...</p>';
+            html += '</div>';
+
+            // Load cross-references from catalog API
+            var partNumber = data.part_number;
+            var catalogPartId = data.catalog_part_id;
+            (function loadCrossRefs() {
+                // Try catalog part detail if we have catalog_part_id
+                var url = catalogPartId
+                    ? '/pos/api/catalog/part/' + catalogPartId
+                    : '/pos/api/catalog/search?q=' + encodeURIComponent(partNumber);
+
+                fetch(url, { headers: { 'Authorization': 'Bearer ' + token } })
+                    .then(function(r) { return r.json(); })
+                    .then(function(d) {
+                        var el = document.getElementById('crossRefContent');
+                        if (!el) return;
+
+                        var alternatives = d.alternatives || [];
+                        var bodegas = d.bodegas || [];
+
+                        // If it was a search, get alternatives from first result
+                        if (!catalogPartId && d.data && d.data.length > 0) {
+                            // Fetch detail for first match
+                            fetch('/pos/api/catalog/part/' + d.data[0].id_part, { headers: { 'Authorization': 'Bearer ' + token } })
+                                .then(function(r2) { return r2.json(); })
+                                .then(function(d2) {
+                                    renderCrossRefs(el, d2.alternatives || [], d2.bodegas || []);
+                                })
+                                .catch(function() { el.innerHTML = '<p style="color:var(--color-text-muted);font-size:var(--text-caption);">Sin conexion al catalogo.</p>'; });
+                            return;
+                        }
+
+                        renderCrossRefs(el, alternatives, bodegas);
+                    })
+                    .catch(function() {
+                        var el = document.getElementById('crossRefContent');
+                        if (el) el.innerHTML = '<p style="color:var(--color-text-muted);font-size:var(--text-caption);">Sin conexion al catalogo central.</p>';
+                    });
+            })();
+
+            function renderCrossRefs(el, alternatives, bodegas) {
+                var html2 = '';
+
+                if (bodegas && bodegas.length > 0) {
+                    html2 += '<div style="margin-bottom:12px;"><strong style="font-size:var(--text-body-sm);color:var(--color-text-primary);">Disponible en Bodegas:</strong></div>';
+                    html2 += '<table class="data-table"><thead><tr><th>Bodega</th><th>Stock</th><th>Precio</th><th>Ubicacion</th></tr></thead><tbody>';
+                    bodegas.forEach(function(b) {
+                        html2 += '<tr><td>' + esc(b.business_name || b.bodega || '') + '</td><td>' + (b.stock || b.stock_quantity || 0) + '</td><td class="td--amount">$' + fmt(b.price || 0) + '</td><td>' + esc(b.location || b.warehouse_location || '') + '</td></tr>';
+                    });
+                    html2 += '</tbody></table>';
+                }
+
+                if (alternatives && alternatives.length > 0) {
+                    html2 += '<div style="margin-top:12px;margin-bottom:8px;"><strong style="font-size:var(--text-body-sm);color:var(--color-text-primary);">Partes Equivalentes (Aftermarket):</strong></div>';
+                    html2 += '<table class="data-table"><thead><tr><th>No. Parte</th><th>Fabricante</th><th>Nombre</th></tr></thead><tbody>';
+                    alternatives.forEach(function(a) {
+                        html2 += '<tr><td class="td--mono">' + esc(a.part_number || a.cross_reference_number || '') + '</td><td>' + esc(a.manufacturer || a.source_ref || '') + '</td><td>' + esc(a.name || a.name_aftermarket_parts || '') + '</td></tr>';
+                    });
+                    html2 += '</tbody></table>';
+                }
+
+                if (!html2) {
+                    html2 = '<p style="color:var(--color-text-muted);font-size:var(--text-caption);">No se encontraron equivalencias para esta parte.</p>';
+                }
+                el.innerHTML = html2;
+            }
+
             // Movement history
             html += '<div style="font-size:var(--text-caption);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:var(--tracking-widest);margin-bottom:8px;">Historial de Movimientos</div>';
             if (!history.length) {