GAC 5820001ERD000 HOOD HINGE
Product Specifications
Product quality
OEM Equivalent Grade
On request
bolt MOQ (Minimal order)
1 pcs
local_shipping Production time
30-45 days
package_2 Shipping Weight:
—
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Application (cross references) 1
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| GAC | 5820001ERD000 |
Overview & Operating Principle
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The HOOD HINGE is a bonnet hinge assembly — a pressed or cast steel pivot bracket that connects the bonnet panel to the vehicle's front body structure at two points on each side, allowing the bonnet to rotate from its fully closed position against the body seals to its fully open service position while carrying the bonnet's full static weight and the dynamic loads imposed by opening and closing. Each bonnet hinge consists of two arms: the body arm that bolts to the inner wing or front body panel reinforcement through slotted holes that allow lateral and fore-aft adjustment of the hinge's body-side position; and the bonnet arm that bolts to the bonnet inner panel through slotted holes that provide independent adjustment of the bonnet's position relative to the hinge pivot. The two arms are connected by a precision steel pivot pin with a nylon or bronze bushing that provides smooth rotation through the bonnet's full opening arc — typically 65–80 degrees from closed — while maintaining zero lateral play that would allow the bonnet to shift sideways in the aperture. The slotted adjustment holes on both the body and bonnet attachment flanges are the feature that allows body technicians to position the bonnet precisely within the aperture after installation or after panel repair, achieving the designed gap and flush to the front wings, the windscreen cowl, and the radiator grille; the adjustment range is typically ±6 mm in each direction, providing sufficient latitude to correct for manufacturing tolerances and for any minor body misalignment after collision repair.
This unit — GAC 5820001ERD000 — is manufactured to OEM-equivalent specifications: pivot pin diameter and bushing type for zero-play rotation, body arm and bonnet arm flange dimensions with slotted holes at the OEM adjustment range, overall hinge geometry and pivot axis position for the correct bonnet opening arc, material gauge and section for the load capacity of the specific bonnet weight, and corrosion protection treatment for the underbonnet environment are matched to the original part. Supplied as an individual hinge for left or right side as specified. Available wholesale from 0.18 USD, MOQ 1 pcs, production lead time 30-45 days.
Bonnet hinges fail through pivot pin wear that introduces lateral play — the bonnet shifts sideways in the aperture and the gap to the wing changes as the bonnet is opened and closed; through body arm cracking or fracture at the body attachment flange from frontal collision loads or from repeated stress cycling at a stress concentration point; through corrosion of the pivot bushing that causes the hinge to bind and require increasing force to open, eventually causing the hinge to crack under the opening force; and through bonnet arm deformation from impact damage that alters the bonnet's angular relationship to the body and prevents correct gap and flush alignment regardless of adjustment.
Symptoms & Diagnostics
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Bonnet that shifts laterally when opened or closed — the gap to the left wing increases while the gap to the right wing closes, or vice versa, as the bonnet moves from closed to open position — the pivot pin has worn and lateral play has developed in the pivot bushing; the bonnet's weight shifts laterally as it rotates on the worn pivot, moving it within the aperture; confirm by grasping the open bonnet at its forward edge and attempting to move it sideways — detectable lateral movement in the pivot confirms worn bushing requiring hinge replacement.
Bonnet gap or flush alignment that cannot be corrected to within specification by adjusting the hinge mounting bolts — the alignment is correct in one position but wrong in another, or one adjustment corrects one gap while worsening another — the hinge body arm or bonnet arm has been deformed by an impact and no longer holds the bonnet at the designed position regardless of adjustment; compare the left and right hinge geometry — a deformed hinge arm is visible as an angular difference between left and right hinges; replace the deformed hinge and realign.
Bonnet that requires increasing force to open — the pivot stiffens progressively over time until the bonnet requires two hands to lift from the closed position — the pivot bushing has corroded or the pivot pin has seized in the bushing from lack of lubrication; a seized pivot hinge imposes the full bonnet weight as a bending load on the hinge arms and the bonnet attachment bolts rather than distributing it through the pivot rotation; if the pivot cannot be freed by lubrication it requires replacement before the arm is cracked by the repeated opening force.
Cracking or visible deformation at the hinge body arm or bonnet arm — a crack visible at the flange radius or a deformed arm visible by comparison with the opposite side — structural damage to the hinge requires immediate replacement; a cracked hinge arm under the bonnet's weight will fracture completely at the next opening, dropping the bonnet onto the engine bay or onto the operator; do not rely on a cracked hinge for continued use even temporarily.
Bonnet that does not sit level in the aperture — one forward corner is higher or lower than the other despite correct latch adjustment and correct hinge bolt positions — the hinge pivot axis on the affected side has shifted from a deformed body arm, changing the bonnet's rotational path and causing it to rest at a different height on the closed latch than the design intent; confirm by measuring the bonnet height at all four aperture corners against the wing and cowl surfaces.
Corrosion perforating the hinge arm at the body attachment zone — rust-through visible on the hinge flange from underbonnet moisture and road salt exposure — a hinge with through-corrosion at the attachment flange has reduced cross-section at its highest-stress zone and will fracture under the bonnet's dynamic loading during the next opening cycle; treat as a safety-critical fault requiring immediate replacement.
Logistics & Customs
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International HS Code
8302.10
EAEU Customs Code (TN VED)
8302 10 000 0
Typical Net Weight
Country of Manufacture
China
Standard MOQ
1 pcs
Production Lead Time
30-45 days
Always verify the exact 8-digit or 10-digit subheading with your customs broker for the destination country, as tariff schedules and duty rates vary by jurisdiction.
Installation Tips
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- Support the bonnet on a padded stand or have a second person hold it before removing any hinge bolt — a bonnet supported by two hinges becomes unsupported when one hinge is removed and will pivot on the remaining hinge, placing all the bonnet's weight on a single attachment point; on heavy bonnets this can fracture the remaining hinge or pull its mounting bolts through the bonnet inner panel; always support the bonnet's weight independently before removing either hinge.
- Mark the body arm bolt positions on the body panel and the bonnet arm bolt positions on the bonnet inner panel before loosening any fastener — the slotted hinge mounting holes provide adjustment range; if the existing hinge was correctly aligned, marking the bolt position before removal allows the new hinge to be installed at the same position, minimising the subsequent alignment adjustment required; use a paint pen or masking tape outline around each bolt head to record the adjusted position.
- Install all hinge bolts hand-tight before beginning the bonnet alignment adjustment — the bonnet position can only be adjusted when all bolts are loose enough to allow the hinge flanges to slide in their slots; tightening any bolt before the alignment is confirmed locks that attachment point and prevents further adjustment in that axis; close the bonnet gently against the body seals with all bolts hand-tight to assess the gap and flush before final tightening.
- Adjust the bonnet position to achieve equal gaps to both wings and correct flush to the cowl and grille — move the bonnet arm bolts fore-aft and laterally within their slots to adjust the bonnet's position; move the body arm bolts to change the hinge's body position and the bonnet's height; measure the gap at the four aperture corners with a gap gauge and adjust until all measurements are within 0.5 mm of each other and within the OEM specification; the gap between bonnet and wing should be equal on left and right sides.
- Torque all hinge bolts to OEM specification in the sequence body arm first, then bonnet arm — typical torque values are 15–25 Nm; tightening the bonnet arm first can shift the bonnet slightly as the torque is applied and alter the aligned position; tighten the body arm bolts first to lock the hinge position to the body, then tighten the bonnet arm bolts to lock the bonnet to the hinge at the confirmed aligned position; apply thread lock compound where specified by the OEM to prevent vibration loosening of the painted hinge bolt threads.
- Install the new HOOD HINGE (GAC 5820001ERD000), apply grease to the pivot pin through the grease nipple where fitted or by removing the pivot pin and applying lithium grease to the bushing surface, confirm smooth pivot rotation through the full opening arc without binding, confirm correct bonnet gap and flush alignment from the factory reference gaps, and open and close the bonnet five times confirming consistent alignment and latch engagement before returning the vehicle to service.
Tools: padded bonnet support stand, paint pen for bolt position marking, gap gauge for alignment measurement, torque wrench (15–25 Nm), lithium grease for pivot lubrication, thread lock compound where specified.
Frequently Asked Questions
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Should both bonnet hinges be replaced simultaneously when only one has failed?
Replacing both hinges simultaneously is recommended when the failure is from pivot pin wear or corrosion — both hinges accumulate the same exposure to underbonnet heat cycling, moisture, and road salt over the same mileage; if one pivot has worn to produce lateral play, the opposite is at the same stage and will exhibit the same play within a short interval. Replacing only the failed hinge leaves one worn and one new hinge with different pivot play — the worn hinge continues to allow the bonnet to shift laterally on that side, producing an asymmetric gap that cannot be corrected by alignment alone. When the failure is from impact damage or collision repair affecting only one side, replacing only the damaged hinge is appropriate. ok.parts supplies bonnet hinges individually and in left-right pairs at wholesale MOQ from 0.18 USD per unit.
Why does bonnet gap alignment change after hinge replacement even when the new hinge is installed at the marked original position?
Three factors cause alignment change after hinge replacement despite using reference marks. First, manufacturing tolerance variation between hinges of the same part number means the new hinge's pivot axis may be fractionally offset from the original — even 0.5 mm difference in the body arm flange hole position shifts the bonnet by the same amount. Second, the reference marks record the body attachment bolt position but not the precise position of the hinge flange within the slot — if the original hinge had been adjusted previously and the slot centre did not correspond to the bolt-head-centre position of the new hinge, there will be a positional difference. Third, compressed body seals recover when the hinge is removed, slightly changing the body-side reference surfaces. For these reasons, reference marks are a starting point rather than a guarantee — always verify the bonnet position by measuring the gaps after installation and before final bolt tightening.
How does the OEM-equivalent aftermarket unit compare to the genuine OEM part?
OEM-equivalent units in this catalogue replicate the current OEM design geometry and material specification. Quality is verified against OEM cross-reference data. When ordering in bulk, confirm with our team that the specification matches the latest OEM revision for your application.
Is white-label or custom packaging available for wholesale orders?
Yes. ok.parts works directly with the manufacturing facility and can accommodate neutral white-label packaging or fully branded packaging with your company logo, part numbers, and barcode. Minimum order quantities and lead times for custom packaging may differ from standard stock. Contact the team via the inquiry form to discuss your specific requirements.
Frequently Replaced Together
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| Part | Reason for Combined Replacement |
|---|---|
| Bonnet Latch Assembly OEM ref. varies by vehicle | A hinge replacement following frontal collision damage will have also subjected the bonnet latch to the same impact loads that deformed the hinge — the latch striker engagement geometry may have changed from the body deformation that caused the hinge damage. With the bonnet removed for hinge access, inspect the latch fork spring force and secondary catch operation; a latch that was only marginal before the impact may have been weakened to the point of insufficient retention force by the same event that damaged the hinge. |
| Bonnet Panel OEM ref. varies by model year | A hinge replaced following collision damage was attached to a bonnet that absorbed impact energy. Even if the bonnet panel does not show visible paint damage, the hinge attachment zone may have deformed internally — the bonnet inner panel at the hinge bolt positions may be buckled or the attachment reinforcement may be cracked. Inspect the bonnet inner panel at both hinge attachment points; a bonnet with structural damage at the hinge attachment zone will not maintain its alignment position when the new hinge is torqued down, and the bonnet will shift position over time as the damaged attachment zone continues to deform. |
| Bonnet Gas Strut (Support) OEM ref. varies — where gas strut fitted | Vehicles fitted with a gas strut bonnet support rather than a mechanical prop rod should have the gas strut inspected simultaneously with the hinge during any bonnet service access. A gas strut that has lost pressure no longer holds the bonnet in the fully open position — a bonnet that drops onto a technician working on the engine is a significant workshop safety hazard. Test the strut by opening the bonnet fully and removing any manual support — a serviceable strut holds the bonnet firmly in position; a depleted strut allows the bonnet to drift downward from the fully open position and requires replacement. |